1
|
Guo W, Zhang Z, Kang J, Gao Y, Qian P, Xie G. Single-cell transcriptome profiling highlights the importance of telocyte, kallikrein genes, and alternative splicing in mouse testes aging. Sci Rep 2024; 14:14795. [PMID: 38926537 DOI: 10.1038/s41598-024-65710-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Accepted: 06/24/2024] [Indexed: 06/28/2024] Open
Abstract
Advancing healthcare for elderly men requires a deeper understanding of testicular aging processes. In this study, we conducted transcriptomic profiling of 43,323 testicular single cells from young and old mice, shedding light on 1032 telocytes-an underexplored testicular cell type in previous research. Our study unveiled 916 age-related differentially expressed genes (age-DEGs), with telocytes emerging as the cell type harboring the highest count of age-DEGs. Of particular interest, four genes (Klk1b21, Klk1b22, Klk1b24, Klk1b27) from the Kallikrein family, specifically expressed in Leydig cells, displayed down-regulation in aged testes. Moreover, cell-type-level splicing analyses unveiled 1838 age-related alternative splicing (AS) events. While we confirmed the presence of more age-DEGs in somatic cells compared to germ cells, unexpectedly, more age-related AS events were identified in germ cells. Further experimental validation highlighted 4930555F03Rik, a non-coding RNA gene exhibiting significant age-related AS changes. Our study represents the first age-related single-cell transcriptomic investigation of testicular telocytes and Kallikrein genes in Leydig cells, as well as the first delineation of cell-type-level AS dynamics during testicular aging in mice.
Collapse
Affiliation(s)
- Wuyier Guo
- Institute of Reproductive Medicine, Medical School, Nantong University, Qixiu Road 19, Nantong, 226001, China
| | - Ziyan Zhang
- Institute of Reproductive Medicine, Medical School, Nantong University, Qixiu Road 19, Nantong, 226001, China
| | - Jiahui Kang
- Institute of Reproductive Medicine, Medical School, Nantong University, Qixiu Road 19, Nantong, 226001, China
| | - Yajing Gao
- Institute of Reproductive Medicine, Medical School, Nantong University, Qixiu Road 19, Nantong, 226001, China
| | - Peipei Qian
- Institute of Reproductive Medicine, Medical School, Nantong University, Qixiu Road 19, Nantong, 226001, China
| | - Gangcai Xie
- Institute of Reproductive Medicine, Medical School, Nantong University, Qixiu Road 19, Nantong, 226001, China.
| |
Collapse
|
2
|
Soliman SA. Immunohistochemical-properties of the dermal embryonic telocytes. Sci Rep 2024; 14:13899. [PMID: 38886354 PMCID: PMC11183069 DOI: 10.1038/s41598-024-63802-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Accepted: 06/03/2024] [Indexed: 06/20/2024] Open
Abstract
The current investigation aims to study the embryonic dermis formed in the early stages of development and identify the initial interstitial components of the dermis that serve as biological and structural scaffolds for the development of the dermal tissue. To investigate the dermal structure, the current study used morphological and immunological techniques. TCs identified by TEM. They had a cell body and unique podomeres and podoms. They formed a 3D network spread throughout the dermis. Homocellular contact established between them, as well as heterocellular contacts with other cells. Immunohistochemical techniques using specific markers for TCss CD34, CD117, and VEGF confirmed TC identification. TCs represent the major interstitial component in the dermal tissue. They established a 3D network, enclosing other cells and structures. Expression of VEGF by TC promotes angiogenesis. TCs establish cellular contact with sprouting endothelial cells. At the site of cell junction with TCs, cytoskeletal filaments identified and observed to form the pseudopodium core that projects from endothelial cells. TCs had proteolytic properties that expressed MMP-9, CD68, and CD21. Proteolytic activity aids in the removal of components of the extracellular matrix and the phagocytosis of degraded remnants to create spaces to facilitate the development of new dermal structures. In conclusion, TCs organized the scaffold for the development of future dermal structures, including fibrous components and skin appendages. Studying dermal TCs would be interested in the possibility of developing therapeutic strategies for treating different skin disorders and diseases.
Collapse
Affiliation(s)
- Soha A Soliman
- Department of Histology, Faculty of Veterinary Medicine, South Valley University, Qena, Egypt.
| |
Collapse
|
3
|
Soliman SA. Immunohistochemical properties of embryonic telocytes in a myogenic microenvironment. Sci Rep 2024; 14:12034. [PMID: 38802438 PMCID: PMC11130138 DOI: 10.1038/s41598-024-62103-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Accepted: 05/13/2024] [Indexed: 05/29/2024] Open
Abstract
Telocytes are a unique interstitial cell type that functions in adulthood and embryogenesis. They have characteristic immunohistochemical phenotypes while acquiring different immunohistochemical properties related to the organ microenvironment. The present study aims to investigate the immunohistochemical features of embryonic telocytes during myogenesis and describe their morphology using light microscopy and TEM. Telocytes represent a major cellular constituent in the interstitial elements. They had distinguished telopodes and podoms and formed a 3D interstitial network in the developing muscles. They formed heterocellular contact with myoblasts and nascent myotubes. Telocytes also had distinctive secretory activity. Telocytes identified by CD34. They also express CD68 and MMP-9 to facilitate the development of new tissues. Expression of CD21 by telocytes may reveal their function in immune defense. They also express VEGF, which regulates angiogenesis. In conclusion, the distribution and immunological properties of telocytes in the myogenic tissue indicate that telocytes provide biological and structural support in the development of the myogenic tissue architecture and organization.
Collapse
Affiliation(s)
- Soha A Soliman
- Department of Histology, Faculty of Veterinary Medicine, South Valley University, Qena, Egypt.
| |
Collapse
|
4
|
Canella M, Shoshkes-Carmel M. Telocytes: Detection, Visualization, Tissue Dissociation, and Tamoxifen-Induction of Transgenic Mice. Methods Mol Biol 2024. [PMID: 38778008 DOI: 10.1007/7651_2024_549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
Telocytes, distinctive interstitial cells, have recently emerged as crucial components of the stem-cell niche in the intestine. Notably, telocytes are distinguished by their extremely long cellular protrusions extending hundreds of microns from the cell body, forming an interconnected network along the intestinal crypt villus axis. Due to these unique cellular characteristics, there is a need for tailored working protocols to effectively characterize and target telocytes. Here, we outline advanced and progressive protocols for tissue fixation, dissociation, visualization, and the use of tamoxifen-induced transgenic mouse models to specifically target telocytes.
Collapse
Affiliation(s)
- Marco Canella
- Department of Developmental Biology and Cancer Research, Institute for Medical Research Israel-Canada, Hebrew University Medical School, Jerusalem, Israel
| | - Michal Shoshkes-Carmel
- Department of Developmental Biology and Cancer Research, Institute for Medical Research Israel-Canada, Hebrew University Medical School, Jerusalem, Israel.
| |
Collapse
|
5
|
Malvasi A, Baldini GM, Cicinelli E, Di Naro E, Baldini D, Favilli A, Quellari PT, Sabbatini P, Fioretti B, Malgieri LE, Damiani GR, Dellino M, Trojano G, Tinelli A. Localization of Catecholaminergic Neurofibers in Pregnant Cervix as a Possible Myometrial Pacemaker. Int J Mol Sci 2024; 25:5630. [PMID: 38891818 PMCID: PMC11171499 DOI: 10.3390/ijms25115630] [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: 03/13/2024] [Revised: 04/27/2024] [Accepted: 05/14/2024] [Indexed: 06/21/2024] Open
Abstract
In eutocic labor, the autonomic nervous system is dominated by the parasympathetic system, which ensures optimal blood flow to the uterus and placenta. This study is focused on the detection of the quantitative presence of catecholamine (C) neurofibers in the internal uterine orifice (IUO) and in the lower uterine segment (LUS) of the pregnant uterus, which could play a role in labor and delivery. A total of 102 women were enrolled before their submission to a scheduled cesarean section (CS); patients showed a singleton fetus in a cephalic presentation outside labor. During CS, surgeons sampled two serial consecutive full-thickness sections 5 mm in depth (including the myometrial layer) on the LUS and two randomly selected samples of 5 mm depth from the IUO of the cervix. All histological samples were studied to quantify the distribution of A nerve fibers. The authors demonstrated a significant and notably higher concentration of A fibers in the IUO (46 ± 4.8) than in the LUS (21 ± 2.6), showing that the pregnant cervix has a greater concentration of A neurofibers than the at-term LUS. Pregnant women's mechanosensitive pacemakers can operate normally when the body is in a physiological state, which permits normal uterine contractions and eutocic delivery. The increased frequency of C neurofibers in the cervix may influence the smooth muscle cell bundles' activation, which could cause an aberrant mechano-sensitive pacemaker activation-deactivation cycle. Stressful circumstances (anxiety, tension, fetal head position) cause the sympathetic nervous system to become more active, working through these nerve fibers in the gravid cervix. They might interfere with the mechano-sensitive pacemakers, slowing down the uterine contractions and cervix ripening, which could result in dystocic labor.
Collapse
Affiliation(s)
- Antonio Malvasi
- 1st Unit of Gynecology and Obstetrics, Department of Interdisciplinary Medicine (DIM), University of Bari (BA), 70124 Bari, Italy; (A.M.); (G.M.B.); (E.C.); (E.D.N.); (G.R.D.); (M.D.)
| | - Giorgio Maria Baldini
- 1st Unit of Gynecology and Obstetrics, Department of Interdisciplinary Medicine (DIM), University of Bari (BA), 70124 Bari, Italy; (A.M.); (G.M.B.); (E.C.); (E.D.N.); (G.R.D.); (M.D.)
| | - Ettore Cicinelli
- 1st Unit of Gynecology and Obstetrics, Department of Interdisciplinary Medicine (DIM), University of Bari (BA), 70124 Bari, Italy; (A.M.); (G.M.B.); (E.C.); (E.D.N.); (G.R.D.); (M.D.)
| | - Edoardo Di Naro
- 1st Unit of Gynecology and Obstetrics, Department of Interdisciplinary Medicine (DIM), University of Bari (BA), 70124 Bari, Italy; (A.M.); (G.M.B.); (E.C.); (E.D.N.); (G.R.D.); (M.D.)
| | | | - Alessandro Favilli
- Department of Medicine and Surgery, Perugia Medical School, University of Perugia, Piazza Lucio Severi 1, 06132 Perugia, Italy; (A.F.); (P.T.Q.)
| | - Paola Tiziana Quellari
- Department of Medicine and Surgery, Perugia Medical School, University of Perugia, Piazza Lucio Severi 1, 06132 Perugia, Italy; (A.F.); (P.T.Q.)
- Department of Chemistry, Biology and Biotechnologies, University of Perugia, Via dell’Elce di Sotto 8, 06132 Perugia, Italy; (P.S.); (B.F.)
- ASST Grande Ospedale Metropolitano Niguarda, 20162 Milano, Italy
| | - Paola Sabbatini
- Department of Chemistry, Biology and Biotechnologies, University of Perugia, Via dell’Elce di Sotto 8, 06132 Perugia, Italy; (P.S.); (B.F.)
| | - Bernard Fioretti
- Department of Chemistry, Biology and Biotechnologies, University of Perugia, Via dell’Elce di Sotto 8, 06132 Perugia, Italy; (P.S.); (B.F.)
| | | | - Gianluca Raffaello Damiani
- 1st Unit of Gynecology and Obstetrics, Department of Interdisciplinary Medicine (DIM), University of Bari (BA), 70124 Bari, Italy; (A.M.); (G.M.B.); (E.C.); (E.D.N.); (G.R.D.); (M.D.)
| | - Miriam Dellino
- 1st Unit of Gynecology and Obstetrics, Department of Interdisciplinary Medicine (DIM), University of Bari (BA), 70124 Bari, Italy; (A.M.); (G.M.B.); (E.C.); (E.D.N.); (G.R.D.); (M.D.)
| | - Giuseppe Trojano
- Department of Maternal and Child, Madonna delle Grazie Hospital ASM, 75100 Matera, Italy;
| | - Andrea Tinelli
- Department of Gynaecology and Obstetrics, CERICSAL (CEntro di RIcerca Clinico SALentino), “Veris delli Ponti Hospital”, 73020 Lecce, Italy
| |
Collapse
|
6
|
Wei X, Li H, Chen T, Yang X. Histological study of telocytes in mice intrauterine adhesion model and their positive effect on mesenchymal stem cells in vitro. Cell Biol Int 2024; 48:647-664. [PMID: 38353345 DOI: 10.1002/cbin.12137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 12/31/2023] [Accepted: 01/28/2024] [Indexed: 04/16/2024]
Abstract
Intrauterine adhesions (IUA), the main cause of secondary infertility in women, result from irreversible fibrotic repair of the endometrium due to inflammation or human factors, accompanied by disruptions in the repair function of endometrial stem cells. This significantly impacts the physical and mental health of women in their childbearing years. Telocytes (TCs), a distinctive type of interstitial cells found in various tissues and organs, play diverse repair functions due to their unique spatial structure. In this study, we conduct the inaugural exploration of the changes in TCs in IUA disease and their potential impact on the function of stem cells. Our results show that in vivo, through double immunofluorescence staining (CD34+/Vimentin+; CD34+/CD31-), as endometrial fibrosis deepens, the number of TCs gradually decreases, telopodes shorten, and the three-dimensional structure becomes disrupted in the mouse IUA mode. In vitro, TCs can promote the proliferation and cycle of bone mesenchymal stem cells (BMSCs) by promoting the Wnt/β-catenin signaling pathway, which were inhibited using XAV939. TCs can promote the migrated ability of BMSCs and contribute to the repair of stem cells during endometrial injury. In addition, TCs can inhibit the apoptosis of BMSCs through the Bcl-2/Bax pathway. In conclusion, our study demonstrates, for the first time, the resistance role of TCs in IUA disease, shedding light on their potential involvement in endometrial repair through the modulation of stem cell function.
Collapse
Affiliation(s)
- Xiaojiao Wei
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Soochow University, Suzhou City, Jiangsu Province, People's Republic of China
| | - Hui Li
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Soochow University, Suzhou City, Jiangsu Province, People's Republic of China
| | - Tianquan Chen
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Soochow University, Suzhou City, Jiangsu Province, People's Republic of China
- Department of Obstetrics and Gynecology, The Affiliated Hospital of Yangzhou University, Yangzhou City, Jiangsu Province, People's Republic of China
| | - Xiaojun Yang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Soochow University, Suzhou City, Jiangsu Province, People's Republic of China
| |
Collapse
|
7
|
Sanches BDA, Teófilo FBS, Brunet MY, Villapun VM, Man K, Rocha LC, Neto JP, Matsumoto MR, Maldarine JS, Ciena AP, Cox SC, Carvalho HF. Telocytes: current methods of research, challenges and future perspectives. Cell Tissue Res 2024; 396:141-155. [PMID: 38539007 DOI: 10.1007/s00441-024-03888-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 03/12/2024] [Indexed: 04/28/2024]
Abstract
Telocytes (TCs) are CD34-positive interstitial cells that have long cytoplasmic projections, called telopodes; they have been identified in several organs and in various species. These cells establish a complex communication network between different stromal and epithelial cell types, and there is growing evidence that they play a key role in physiology and pathology. In many tissues, TC network impairment has been implicated in the onset and progression of pathological conditions, which makes the study of TCs of great interest for the development of novel therapies. In this review, we summarise the main methods involved in the characterisation of these cells as well as their inherent difficulties and then discuss the functional assays that are used to uncover the role of TCs in normal and pathological conditions, from the most traditional to the most recent. Furthermore, we provide future perspectives in the study of TCs, especially regarding the establishment of more precise markers, commercial lineages and means for drug delivery and genetic editing that directly target TCs.
Collapse
Affiliation(s)
- Bruno D A Sanches
- Department of Structural and Functional Biology, Institute of Biology, State University of Campinas (UNICAMP), Carl von Linnaeus St. Bldg G1, Bertrand Russel Ave., Campinas, São Paulo, Brazil
| | - Francisco B S Teófilo
- Department of Structural and Functional Biology, Institute of Biology, State University of Campinas (UNICAMP), Carl von Linnaeus St. Bldg G1, Bertrand Russel Ave., Campinas, São Paulo, Brazil
| | - Mathieu Y Brunet
- School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Victor M Villapun
- School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Kenny Man
- Department of Oral and Maxillofacial Surgery & Special Dental Care, University Medical Center Utrecht, Utrecht University, Utrecht, 3508 GA, The Netherlands
- Regenerative Medicine Center Utrecht, Utrecht, 3584 CT, The Netherlands
| | - Lara C Rocha
- Laboratory of Morphology and Physical Activity (LAMAF), Institute of Biosciences, São Paulo State University (UNESP), 1515 24 A Ave., Rio Claro, São Paulo, Brazil
| | - Jurandyr Pimentel Neto
- Laboratory of Morphology and Physical Activity (LAMAF), Institute of Biosciences, São Paulo State University (UNESP), 1515 24 A Ave., Rio Claro, São Paulo, Brazil
| | - Marta R Matsumoto
- Department of Structural and Functional Biology, Institute of Biology, State University of Campinas (UNICAMP), Carl von Linnaeus St. Bldg G1, Bertrand Russel Ave., Campinas, São Paulo, Brazil
| | - Juliana S Maldarine
- Department of Structural and Functional Biology, Institute of Biology, State University of Campinas (UNICAMP), Carl von Linnaeus St. Bldg G1, Bertrand Russel Ave., Campinas, São Paulo, Brazil
| | - Adriano P Ciena
- Laboratory of Morphology and Physical Activity (LAMAF), Institute of Biosciences, São Paulo State University (UNESP), 1515 24 A Ave., Rio Claro, São Paulo, Brazil
| | - Sophie C Cox
- School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Hernandes F Carvalho
- Department of Structural and Functional Biology, Institute of Biology, State University of Campinas (UNICAMP), Carl von Linnaeus St. Bldg G1, Bertrand Russel Ave., Campinas, São Paulo, Brazil.
| |
Collapse
|
8
|
Pulze L, Baranzini N, Acquati F, Marcolli G, Grimaldi A. Dynamic relationship among extracellular matrix and body wall cells in Hirudo verbana morphogenesis. Cell Tissue Res 2024; 396:213-229. [PMID: 38424269 PMCID: PMC11055932 DOI: 10.1007/s00441-024-03874-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 02/05/2024] [Indexed: 03/02/2024]
Abstract
A great bulk of recent experimental evidence suggests the key role of the complex crosstalk between the extracellular matrix (ECM) and the cellular component of tissues during morphogenesis and embryogenesis. In particular, remodeling of the ECM and of its physical interactions pattern with surrounding cells represent two crucial processes that might be involved in muscle development. However, little information is available on this topic, especially on invertebrate species. To obtain new insights on how tuning the ECM microenvironment might drive cellular fate during embryonic development, we used the invertebrate medicinal leech Hirudo verbana as a valuable experimental model, due to its simple anatomy and the recapitulation of many aspects of the basic biological processes of vertebrates. Our previous studies on leech post-embryonic development have already shown the pivotal role of ECM changes during the growth of the body wall and the role of Yes-associated protein 1 (YAP1) in mechanotransduction. Here, we suggest that the interactions between stromal cell telocytes and ECM might be crucial in driving the organization of muscle layers during embryogenesis. Furthermore, we propose a possible role of the pleiotropic enzyme HvRNASET2 as a possible modulator of collagen deposition and ECM remodeling not only during regenerative processes (as previously demonstrated) but also in embryogenesis.
Collapse
Affiliation(s)
- Laura Pulze
- Department of Biotechnology and Life Sciences, University of Insubria, via J.H. Dunant 3, 21100, Varese, Italy
- ILFARM s.r.l., via Guicciardini 14, 21100, Varese, Italy
| | - Nicolò Baranzini
- Department of Biotechnology and Life Sciences, University of Insubria, via J.H. Dunant 3, 21100, Varese, Italy
- ILFARM s.r.l., via Guicciardini 14, 21100, Varese, Italy
| | - Francesco Acquati
- Department of Biotechnology and Life Sciences, University of Insubria, via J.H. Dunant 3, 21100, Varese, Italy
- ILFARM s.r.l., via Guicciardini 14, 21100, Varese, Italy
| | - Gaia Marcolli
- Department of Biotechnology and Life Sciences, University of Insubria, via J.H. Dunant 3, 21100, Varese, Italy
| | - Annalisa Grimaldi
- Department of Biotechnology and Life Sciences, University of Insubria, via J.H. Dunant 3, 21100, Varese, Italy.
- ILFARM s.r.l., via Guicciardini 14, 21100, Varese, Italy.
| |
Collapse
|
9
|
Sohn Y, Flores Semyonov B, El-Mekkoussi H, Wright CVE, Kaestner KH, Choi E, Goldenring JR. Telocyte Recruitment During the Emergence of a Metaplastic Niche in the Stomach. Cell Mol Gastroenterol Hepatol 2024; 18:101347. [PMID: 38670488 PMCID: PMC11177065 DOI: 10.1016/j.jcmgh.2024.04.004] [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: 09/16/2023] [Revised: 04/16/2024] [Accepted: 04/16/2024] [Indexed: 04/28/2024]
Abstract
BACKGROUND & AIM Telocytes, a recently identified type of subepithelial interstitial cell, have garnered attention for their potential roles in tissue homeostasis and repair. However, their contribution to gastric metaplasia remains unexplored. This study elucidates the role of telocytes in the development of metaplasia within the gastric environment. METHODS To investigate the presence and behavior of telocytes during metaplastic transitions, we used drug-induced acute injury models (using DMP-777 or L635) and a genetically engineered mouse model (Mist1-Kras). Lineage tracing via the Foxl1-CreERT2;R26R-tdTomato mouse model was used to track telocyte migratory dynamics. Immunofluorescence staining was used to identify telocyte markers and evaluate their correlation with metaplasia-related changes. RESULTS We confirmed the existence of FOXL1+/PDGFRα+ double-positive telocytes in the stomach's isthmus region. As metaplasia developed, we observed a marked increase in the telocyte population. The distribution of telocytes expanded beyond the isthmus to encompass the entire gland and closely reflected the expansion of the proliferative cell zone. Rather than a general response to mucosal damage, the shift in telocyte distribution was associated with the establishment of a metaplastic cell niche at the gland base. Furthermore, lineage-tracing experiments highlighted the active recruitment of telocytes to the emerging metaplastic cell niche, and we observed expression of Wnt5a, Bmp4, and Bmp7 in PDGFRα+ telocytes. CONCLUSIONS These results suggest that telocytes contribute to the evolution of a gastric metaplasia niche. The dynamic behavior of these stromal cells, their responsiveness to metaplastic changes, and potential association with Wnt5a, Bmp4, and Bmp7 signaling emphasize the significance of telocytes in tissue adaptation and repair.
Collapse
Affiliation(s)
- Yoojin Sohn
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee; Vanderbilt Program in Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee; Epithelial Biology Center, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Blake Flores Semyonov
- Section of Surgical Sciences, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Hilana El-Mekkoussi
- Department of Genetics and Center for Molecular Studies in Digestive and Liver Diseases, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Christopher V E Wright
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee; Vanderbilt Program in Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee; Epithelial Biology Center, Vanderbilt University Medical Center, Nashville, Tennessee; Vanderbilt Center for Stem Cell Biology, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Klaus H Kaestner
- Department of Genetics and Center for Molecular Studies in Digestive and Liver Diseases, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Eunyoung Choi
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee; Vanderbilt Program in Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee; Epithelial Biology Center, Vanderbilt University Medical Center, Nashville, Tennessee; Section of Surgical Sciences, Vanderbilt University Medical Center, Nashville, Tennessee; Vanderbilt Center for Stem Cell Biology, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - James R Goldenring
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee; Vanderbilt Program in Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee; Epithelial Biology Center, Vanderbilt University Medical Center, Nashville, Tennessee; Section of Surgical Sciences, Vanderbilt University Medical Center, Nashville, Tennessee; Nashville VA Medical Center, Nashville, Tennessee.
| |
Collapse
|
10
|
Babadag S, Altundag-Erdogan Ö, Akkaya-Ulum YZ, Çelebi-Saltik B. Evaluation of Tumorigenic Properties of MDA-MB-231 Cancer Stem Cells Cocultured with Telocytes and Telocyte-Derived Mitochondria Following miR-146a Inhibition. DNA Cell Biol 2024. [PMID: 38634821 DOI: 10.1089/dna.2024.0031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2024] Open
Abstract
Telocytes have some cytoplasmic extensions called telopodes, which are thought to play a role in mitochondrial transfer in intercellular communication. Besides, it is hypothesized that telocytes establish cell membrane-mediated connections with breast cancer cells in coculture and may contribute to the survival of neoplastic cell clusters together with other stromal cells. The aim of this study is to investigate the contribution of telocytes and telocyte-derived mitochondria, which have also been identified in breast tumors, to the tumor development of breast cancer stem cells (CSCs) via miR-146a-5p. The isolation/characterization of telocytes from bone marrow mononuclear cells and the isolation of mitochondria from these cells were performed, respectively. In the next step, CSCs were isolated from the MDA-MB-231 cell line and were characterized. Then, miR-146a-5p expressions of CSCs were inhibited by anti-miR-146a-5p. The epithelial-mesenchymal transition (EMT) was determined by evaluating changes in vimentin protein levels and was evaluated by analyzing BRCA1, P53, SOX2, E-cadherin, and N-cadherin gene expression changes. Our results showed that miR-146a promoted stemness and oncogenic properties in CSCs. EMT (N-cadherin, vimentin, E-cadherin) and tumorigenic markers (BRCA1, P53, SOX2) of CSCs decreased after miR-146a inhibition. Bone marrow-derived telocytes and mitochondria derived from telocytes favored the reduction of CSC aggressiveness following this inhibition.
Collapse
Affiliation(s)
- Sena Babadag
- Department of Stem Cell Sciences, Hacettepe University Graduate School of Health Sciences, Ankara, Turkey
- Center for Stem Cell Research and Development, Hacettepe University, Ankara, Turkey
| | - Özlem Altundag-Erdogan
- Department of Stem Cell Sciences, Hacettepe University Graduate School of Health Sciences, Ankara, Turkey
- Center for Stem Cell Research and Development, Hacettepe University, Ankara, Turkey
| | - Yeliz Z Akkaya-Ulum
- Department of Medical Biology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Betül Çelebi-Saltik
- Department of Stem Cell Sciences, Hacettepe University Graduate School of Health Sciences, Ankara, Turkey
- Center for Stem Cell Research and Development, Hacettepe University, Ankara, Turkey
| |
Collapse
|
11
|
Pawlicki P, Yurdakok-Dikmen B, Tworzydlo W, Kotula-Balak M. Toward understanding the role of the interstitial tissue architects: Possible functions of telocytes in the male gonad. Theriogenology 2024; 217:25-36. [PMID: 38241912 DOI: 10.1016/j.theriogenology.2024.01.013] [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: 01/27/2023] [Revised: 01/08/2024] [Accepted: 01/11/2024] [Indexed: 01/21/2024]
Abstract
Telocytes represent a relatively recently discovered population of interstitial cells with a unique morphological structure that distinguishes them from other neighboring cells. Through their long protrusions extending from the cell body, telocytes create microenvironments via tissue compartmentalization and create homo- and hetero-cellular junctions. These establish a three-dimensional network enabling the maintenance of interstitial compartment homeostasis through regulation of extracellular matrix organization and activity, structural support, paracrine and juxtracrine communication, immunomodulation, immune surveillance, cell survival, and apoptosis. The presence of telocytes has also been confirmed in testicular interstitial tissue of many species of animals. The objective of this review is to summarize recent findings on telocytes in the male gonad, on which conclusions have been deduced that indicate the involvement of telocytes in maintaining the cytoarchitecture of the testicular interstitial tissue, in the processes of spermatogenesis and steroidogenesis, and photoperiod-mediated changes in the testes in seasonally reproductive animals.
Collapse
Affiliation(s)
- Piotr Pawlicki
- Center of Experimental and Innovative Medicine, University of Agriculture in Krakow, Redzina 1c, 30-248, Krakow, Poland.
| | - Begum Yurdakok-Dikmen
- Department of Pharmacology and Toxicology, Ankara University Faculty of Veterinary Medicine, Ankara, 06110, Dışkapı, Turkey.
| | - Waclaw Tworzydlo
- Department of Developmental Biology and Invertebrate Morphology, Institute of Zoology and Biomedical Research, Faculty of Biology, Jagiellonian University in Krakow, Gronostajowa 9, 30-385, Krakow, Poland.
| | - Malgorzata Kotula-Balak
- Department of Animal Anatomy and Preclinical Sciences, University Centre of Veterinary Medicine JU-UA, University of Agriculture in Krakow, Mickiewicza 24/28, 30-059, Krakow, Poland.
| |
Collapse
|
12
|
Babadag S, Altundag-Erdogan Ö, Akkaya-Ulum YZ, Çelebi-Saltik B. The role of telocytes and miR-21-5p in tumorigenicity and metastasis of breast cancer stem cells. Mol Biol Rep 2024; 51:395. [PMID: 38446251 DOI: 10.1007/s11033-024-09352-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Accepted: 02/14/2024] [Indexed: 03/07/2024]
Abstract
BACKGROUND This study aims to investigate the roles of telocytes on the metastatic properties of breast cancer stem cells (CSCs), and to re-evaluate the effect of miR-21-5p expression on CSCs following the addition of telocytes. METHODS AND RESULTS Telocytes from human bone marrow mononuclear cells were isolated/characterised. This was followed by the isolation/characterisation of CSCs from the MDA-MB-231. miR-21-5p was both overexpressed/inhibited in CSCs. Through co-culture studies, EMT transition and oncogenic properties of CSCs were investigated by analysing changes in ALDH1 and vimentin protein levels as well as changes in the ABCC11, SNAI1, LZTFL1, Oct 3/4, E- and N-cadherin gene expression levels. With the inhibition of miR-21-5p, significant increases in LZTFL and ABCC11 were observed with the addition of telocytes. The expression of the LZTFL gene, which decreased with the overexpression of miR-21-5p, increased in CSCs after co-culture with telocytes. While an increase expression of ABCC11, SNAI1, N-Cadherin, vimentin and ALDH was observed in CSCs after overexpression of miR-21-5p, significant decreases in these expressions were observed after co-culture with telocyte. CONCLUSIONS In our study, by gene/protein level analysis we demonstrated that telocytes may have the potential to reduce cancer metastasis through miR-21-5p in breast cancer progression and reduce EMT transition.
Collapse
Affiliation(s)
- Sena Babadag
- Department of Stem Cell Sciences, Hacettepe University Graduate School of Health Sciences, Sihhiye, Ankara, 06100, Turkey
- Center for Stem Cell Research and Development, Hacettepe University, Sihhiye, Ankara, 06100, Turkey
| | - Özlem Altundag-Erdogan
- Department of Stem Cell Sciences, Hacettepe University Graduate School of Health Sciences, Sihhiye, Ankara, 06100, Turkey
- Center for Stem Cell Research and Development, Hacettepe University, Sihhiye, Ankara, 06100, Turkey
| | - Yeliz Z Akkaya-Ulum
- Department of Medical Biology, Faculty of Medicine, Hacettepe University, Sihhiye, Ankara, 06100, Turkey
| | - Betül Çelebi-Saltik
- Department of Stem Cell Sciences, Hacettepe University Graduate School of Health Sciences, Sihhiye, Ankara, 06100, Turkey.
- Center for Stem Cell Research and Development, Hacettepe University, Sihhiye, Ankara, 06100, Turkey.
| |
Collapse
|
13
|
Massoud D, Abd-Elhafeez HH, Emeish WFA, Fouda M, Shaldoum F, Alrashdi BM, Hassan M, Soliman SA. A transmission electron microscopy investigation suggests that telocytes, skeletal muscles, myoblasts, and stem cells in common carp (Cyprinus carpio) respond to salinity challenges. BMC Vet Res 2024; 20:73. [PMID: 38402164 PMCID: PMC10893627 DOI: 10.1186/s12917-024-03916-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Accepted: 02/06/2024] [Indexed: 02/26/2024] Open
Abstract
BACKGROUND Telocytes are modified interstitial cells that communicate with other types of cells, including stem cells. Stemness properties render them more susceptible to environmental conditions. The current morphological investigation examined the reactions of telocytes to salt stress in relation to stem cells and myoblasts. The common carp are subjected to salinity levels of 0.2, 6, and 10 ppt. The gill samples were preserved and prepared for TEM. RESULTS The present study observed that telocytes undergo morphological change and exhibit enhanced secretory activities in response to changes in salinity. TEM can identify typical telocytes. This research gives evidence for the communication of telocytes with stem cells, myoblasts, and skeletal muscles. Telocytes surround stem cells. Telopodes made planar contact with the cell membrane of the stem cell. Telocytes and their telopodes surrounded the skeletal myoblast. These findings show that telocytes may act as nurse cells for skeletal stem cells and myoblasts, which undergo fibrillogenesis. Not only telocytes undergo morphological alternations, but also skeletal muscles become hypertrophied, which receive telocyte secretory vesicles in intercellular compartments. CONCLUSION In conclusion, the activation of telocytes is what causes stress adaptation. They might act as important players in intercellular communication between cells. It is also possible that reciprocal interaction occurs between telocytes and other cells to adapt to changing environmental conditions.
Collapse
Affiliation(s)
- Diaa Massoud
- Department of Biology, College of Science, Jouf University, Sakaka, Al-Jouf, 72341, Saudi Arabia.
| | - Hanan H Abd-Elhafeez
- Department of Cell and Tissues, Faculty of Veterinary Medicine, Assiut University, Assiut, 71526, Egypt
| | - Walaa F A Emeish
- Department of Fish Diseases, Faculty of Veterinary Medicine, South Valley University, Qena, 83523, Egypt
| | - Maged Fouda
- Department of Biology, College of Science, Jouf University, Sakaka, Al-Jouf, 72341, Saudi Arabia
| | - Fayez Shaldoum
- Department of Biology, College of Science, Jouf University, Sakaka, Al-Jouf, 72341, Saudi Arabia
| | - Barakat M Alrashdi
- Department of Biology, College of Science, Jouf University, Sakaka, Al-Jouf, 72341, Saudi Arabia
| | - Mervat Hassan
- Department of Theriogenology, Faculty of Veterinary Medicine, New Valley University, El Kharga, Egypt
| | - Soha A Soliman
- Department of Histology, Faculty of Veterinary Medicine, Qena, Egypt
| |
Collapse
|
14
|
Shoshkes-Carmel M. Telocytes in the Luminal GI Tract. Cell Mol Gastroenterol Hepatol 2024; 17:697-701. [PMID: 38342300 PMCID: PMC10958115 DOI: 10.1016/j.jcmgh.2024.02.002] [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: 11/24/2023] [Revised: 02/01/2024] [Accepted: 02/01/2024] [Indexed: 02/13/2024]
Abstract
Telocytes are unique mesenchymal cells characterized by multiple remarkably long cytoplasmic extensions that extend hundreds of micron away from the cell body. Through these extensions, telocytes establish a 3-dimensional network by connecting with other telocytes and various cell types within the tissue. In the intestine, telocytes have emerged as an essential component of the stem cell niche, providing Wnt proteins that are critical for the proliferation of stem and progenitor cells. However, the analysis of single-cell RNA sequencing has revealed other stromal populations and mechanisms for niche organization, raising questions about the role of telocytes as a component of the stem cell niche. This review explores the current state-of-the-art, existing controversies, and potential future directions related to telocytes in the luminal gastrointestinal tract.
Collapse
Affiliation(s)
- Michal Shoshkes-Carmel
- Department of Developmental Biology and Cancer Research, Institute for Medical Research Israel-Canada, Hebrew University Medical School, Jerusalem, Israel.
| |
Collapse
|
15
|
Yang M, Yang T, Mei L, Zhang Y, Liang C, Bai X, Zhang Z, Shi Y, Chen Q. The Potential of Berberine to Target Telocytes in Rabbit Heart. PLANTA MEDICA 2024; 90:84-95. [PMID: 37714195 DOI: 10.1055/a-2176-5881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/17/2023]
Abstract
A brand-new class of interstitial cells, called telocytes, has been detected in the heart. Telocytes can connect and transmit signals to almost all cardiomyocytes; this is highly interrelated with the occurrence and development of heart diseases. Modern studies have shown that berberine has a therapeutic effect on cardiovascular health. However, berberine's mechanism of action on the cardiovascular system through cardiac telocytes is unclear. Interestingly, 5 µm of berberine remarkably decreased the concentration of intracellular calcium and membrane depolarization in cultured telocytes, upregulated the expression of CX43 and β-catenin, and downregulated the expressions of TRPV4 and TRPV1. Here, telocytes were identified in the vascular adventitia and intima, endocardium, myocardium, adventitia, and heart valves. Moreover, telocytes were broadly dispersed around cardiac vessels and interacted directly through gap junctions and indirectly through extracellular vesicles. Together, cardiac telocytes interact with berberine and then deliver drug information to the heart. Telocytes may be an essential cellular target for drug therapy of the cardiovascular system.
Collapse
Affiliation(s)
- Min Yang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province, China
| | - Tong Yang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province, China
| | - Lu Mei
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province, China
| | - Yingxing Zhang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province, China
| | - Chunhua Liang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province, China
| | - Xuebing Bai
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province, China
| | - Zhenwei Zhang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province, China
| | - Yonghong Shi
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai, China
| | - Qiusheng Chen
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province, China
| |
Collapse
|
16
|
Wang S, Cheng Y, Liu L, Chen R, Li Y, Wang H, Zhang R. The Morphology and Ultrastructure of Dermal Telocytes Characterized by TEM and AFM. Cell Biochem Biophys 2024:10.1007/s12013-024-01222-y. [PMID: 38300374 DOI: 10.1007/s12013-024-01222-y] [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: 09/11/2023] [Accepted: 01/17/2024] [Indexed: 02/02/2024]
Abstract
This investigation delves into the structural foundation of human dermal telocytes (TCs) with the aim of elucidating their role in signal transmission. Dermal TCs were isolated from human foreskins via enzymatic digestion and flow cytometric sorting, and identified by immunohistochemical staining with an antibody against CD34. The ultrastructure of TCs was examined using transmission electron microscopy (TEM). The proliferation rates of sorted TCs and CD34-negative fibroblasts were compared using the MTS assay (Cell Proliferation Assay). Images of viable cultured TCs were analyzed using atomic force microscopy (AFM) under normal atmospheric pressure and temperature. Results demonstrated that dermal TCs were positive for CD34 and vimentin, predominantly distributed in the reticular dermis and subcutaneous tissue, forming interwoven networks. Each TC had a small body with a high nuclear-plasma ratio and two or three extremely long and thin telopodes (TPs), exhibiting a typical 'moniliform' appearance. Compared with CD34-negative fibroblasts, dermal TCs exhibited significantly lower proliferation rates. Cultured TCs displayed typical moniliform projections (namely, TPs) in the AFM images. The distal ends of TPs were enlarged, shaped like a broom, and extended multiple pseudopods to contact other cell bodies. Slender filamentary pseudopodia and thick, short cone-like structures were observed on the surfaces of the dilated segments and terminals of TPs. These structures are assumed to be evidence of the secretion and release of endosomes, such as exosomes, and the communication between cells. TCs form interstitial networks in the reticular dermis and subcutaneous tissue, providing a structural basis for contacts between cells and the secretion of signal-carrying substances, involving intercellular connections and communication.
Collapse
Affiliation(s)
- Shengyi Wang
- Department of Dermatology, Xuzhou Central Hospital, Xuzhou, 221009, China
| | - Yan Cheng
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 201210, China
| | - Lei Liu
- Institute of Biomedical Engineering and Health Sciences, Changzhou University, Changzhou, Jiangsu, 213164, China
| | - Renhe Chen
- Department of Dermatology, the Third Affiliated Hospital of Soochow University, 185 Juqian Road, Changzhou, 213003, China
| | - Yue Li
- Department of Dermatology, the Third Affiliated Hospital of Soochow University, 185 Juqian Road, Changzhou, 213003, China
| | - Huiying Wang
- Department of Dermatology, the Third Affiliated Hospital of Soochow University, 185 Juqian Road, Changzhou, 213003, China
| | - Ruzhi Zhang
- Department of Dermatology, the Second Affiliated Hospital of Wannan Medical College, Wuhu, 241000, China.
| |
Collapse
|
17
|
Junatas KL, Couck L, Tay H, Sinowatz F, Van Den Broeck W. Ultrastructural evidence of telocytes in the embryonic chick heart. Anat Histol Embryol 2024; 53:e12970. [PMID: 37740674 DOI: 10.1111/ahe.12970] [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: 12/17/2021] [Revised: 09/01/2023] [Accepted: 09/04/2023] [Indexed: 09/25/2023]
Abstract
The cardiac telocyte (TC) is a novel interstitial cell type with a unique ultrastructure and great potential in therapy. The present study examined its presence in the heart of chicken embryos ageing 7-15 days old (Hamburger-Hamilton [HH] stages 31-41) using transmission electron microscopy. TCs were identified across all stages in the atrial and ventricular myocardium, close to maturing cardiomyocytes, blood vessels and lymphatics. Early-stage TCs have immature features resembling mesenchymal cells. Late-stage TCs were distinct, possessing the cytoplasmic prolongations termed telopodes (Tps), which are very long and thin, usually 1-3 in number, and display a moniliform appearance and have an average thickness below 0.2 μm. TCs residing in the epicardium and endocardium were also detected. In the subepicardium near developing coronary vessels, they were localized in the cardiac stem cell niches, coexisting with cardiac stem cells and cardiomyocyte progenitors. Electron-dense structures and the release of extracellular vesicles were observed between embryonic TCs and surrounding structures, suggesting roles in intercellular communication, cardiomyocyte differentiation and maturation, angiogenesis, and stem cell nursing and guidance.
Collapse
Affiliation(s)
- Khan Lamanero Junatas
- Department of Morphology, Medical Imaging, Orthopaedics, Physiotherapy and Nutrition - Laboratory of Morphology, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
- Department of Basic Veterinary Sciences, College of Veterinary Medicine, University of Southern Mindanao, Cotabato, Philippines
| | - Liesbeth Couck
- Department of Morphology, Medical Imaging, Orthopaedics, Physiotherapy and Nutrition - Laboratory of Morphology, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Hanna Tay
- Department of Morphology, Medical Imaging, Orthopaedics, Physiotherapy and Nutrition - Laboratory of Morphology, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Fred Sinowatz
- Institute of Anatomy, Histology and Embryology, Department of Veterinary Sciences, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - Wim Van Den Broeck
- Department of Morphology, Medical Imaging, Orthopaedics, Physiotherapy and Nutrition - Laboratory of Morphology, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| |
Collapse
|
18
|
Wang Z, Xu Y, Huang L, Zhao J, Ye Y, Liu C, Wang B, Zhao H, Zhang H. Ultrastructural characteristics and morphological relationships of cardiomyocytes and telocytes in the myocardium of the bullfrog (Rana catesbeiana). Anat Histol Embryol 2024; 53:e13008. [PMID: 38230833 DOI: 10.1111/ahe.13008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 10/29/2023] [Accepted: 12/05/2023] [Indexed: 01/18/2024]
Abstract
Telocytes (TCs) are distinctive interstitial cells due to their characteristic structures and heterogeneity. They are suggested to participate in tissue repair/regeneration. TCs have been identified in many organs of various mammals. However, data on TCs in lower animals are still very limited. In this work, TCs were identified in the myocardium of the bullfrog (Rana catesbeiana) by light and transmission electron microscopy (TEM). The structural relationships between TCs and neighbouring cell types were measured using the ImageJ (FiJi) morphometric software. TCs with slender Tps (telepodes) were located around cardiomyocytes (CMC). TEM revealed TCs with long Tps in the stroma between CMC. The homocellular tight junctions were observed between the Tps. The Tps were also very close to the neighbouring CMC. The distance between Tps and CMC was 0.15 ± 0.08 μm. Notably, Tps were observed to adhere to the periphery of the satellite cells. The Tps and the satellite cells established heterocellular structural connections by tight junctions. Additionally, Tps were frequently observed in close proximity to mast cells (MCs). The distance between the Tps and the MCs was 0.19 ± 0.09 μm. These results confirmed that TCs are present in the myocardium of the bullfrog, and that TCs established structural relationships with neighbouring cell types, including satellite cells and MCs. These findings provide the anatomical evidence to support the note that TCs are involved in tissue regeneration.
Collapse
Affiliation(s)
- Zifan Wang
- College of Life Science and Engineering, Foshan University, Foshan, China
| | - Yizhen Xu
- College of Life Science and Engineering, Foshan University, Foshan, China
| | - Ling Huang
- College of Life Science and Engineering, Foshan University, Foshan, China
| | - Jiancheng Zhao
- College of Life Science and Engineering, Foshan University, Foshan, China
| | - Yaqiong Ye
- College of Life Science and Engineering, Foshan University, Foshan, China
| | - Canying Liu
- College of Life Science and Engineering, Foshan University, Foshan, China
- Guangdong Provincial Engineering Research Center for Animal Stem Cells of Ordinary Universities, Foshan, China
| | - Bingyun Wang
- College of Life Science and Engineering, Foshan University, Foshan, China
- Guangdong Provincial Engineering Research Center for Animal Stem Cells of Ordinary Universities, Foshan, China
| | - Haiquan Zhao
- College of Life Science and Engineering, Foshan University, Foshan, China
| | - Hui Zhang
- College of Life Science and Engineering, Foshan University, Foshan, China
- Guangdong Provincial Engineering Research Center for Animal Stem Cells of Ordinary Universities, Foshan, China
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, China
| |
Collapse
|
19
|
Zhang S, Sun L, Chen B, Lin S, Gu J, Tan L, Lin M. Telocytes protect against lung tissue fibrosis through hexokinase 2-dependent pathway by secreting hepatocyte growth factor. Clin Exp Pharmacol Physiol 2023; 50:964-972. [PMID: 37715611 DOI: 10.1111/1440-1681.13823] [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: 02/19/2023] [Revised: 08/08/2023] [Accepted: 08/27/2023] [Indexed: 09/17/2023]
Abstract
Pulmonary fibrosis (PF) is one of the common manifestations of end-stage lung disease. Chronic lung failure after lung transplantation is mainly caused by bronchiolitis obliterans syndrome (BOS) and is mainly characterized by lung tissue fibrosis. Pulmonary epithelial-mesenchymal transformation (EMT) is crucial for pulmonary fibrosis. Telocytes (TCs), a new type of mesenchymal cells, play a protective role in various acute injuries. For exploring the anti-pulmonary fibrosis effect of TCs in the BOS model in vitro and the related mechanism, rat tracheal epithelial (RTE) cells were treated with transforming growth factor-β (TGF-β) to simulate lung tissue fibrosis in vitro. The RTE cells were then co-cultured with TCs primarily extracted from rat lung tissue. Western blot, Seahorse XF Analysers and enzyme-linked immunosorbent assay were used to detect the level of EMT and aerobic respiration of RTE cells. Furthermore, anti-hepatocyte growth factor (anti-HGF) antibody was exogenously added to the cultured cells to explore further mechanisms. Moreover, hexokinase 2 (HK2) in RTE cells was knocked down to assess whether it influences the blocking effect of the anti-HGF antibody. TGF-β could induce lung tissue fibrosis in RTE cells in vitro. Nevertheless, TCs co-culture decreased the level of EMT, glucose metabolic indicators (lactate and ATP) and oxygen levels. Furthermore, TCs released hepatocyte growth factor (HGF). Therefore, the exogenous addition of anti-HGF antibody in the co-culture system blocked the anti-lung tissue fibrosis effect. However, HK2 knockdown attenuated the blocking effect of the anti-HGF antibody. In conclusion, TCs can protect against lung tissue fibrosis by releasing HGF, a process dependent on HK2.
Collapse
Affiliation(s)
- Shaoyuan Zhang
- Department of Thoracic Surgery, Zhongshan Hospital (Xiamen), Fudan University, Xiamen, China
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
- Cancer Center, Zhongshan Hospital, Fudan University, Shanghai, China
- Key Laboratory of Lung Inflammation and Injury, Shanghai, China
| | - Linyi Sun
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
- Cancer Center, Zhongshan Hospital, Fudan University, Shanghai, China
- Key Laboratory of Lung Inflammation and Injury, Shanghai, China
| | - Borong Chen
- Department of Thoracic Surgery, Zhongshan Hospital (Xiamen), Fudan University, Xiamen, China
| | - Siyun Lin
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jianmin Gu
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
- Cancer Center, Zhongshan Hospital, Fudan University, Shanghai, China
- Key Laboratory of Lung Inflammation and Injury, Shanghai, China
| | - Lijie Tan
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
- Cancer Center, Zhongshan Hospital, Fudan University, Shanghai, China
- Key Laboratory of Lung Inflammation and Injury, Shanghai, China
| | - Miao Lin
- Department of Thoracic Surgery, Zhongshan Hospital (Xiamen), Fudan University, Xiamen, China
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
- Cancer Center, Zhongshan Hospital, Fudan University, Shanghai, China
- Key Laboratory of Lung Inflammation and Injury, Shanghai, China
| |
Collapse
|
20
|
Wei XJ, Huang YL, Chen TQ, Yang XJ. Inhibitory effect of telocyte-induced M1 macrophages on endometriosis: Targeting angiogenesis and invasion. Acta Histochem 2023; 125:152099. [PMID: 37813067 DOI: 10.1016/j.acthis.2023.152099] [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: 11/29/2022] [Revised: 09/28/2023] [Accepted: 09/30/2023] [Indexed: 10/11/2023]
Abstract
PURPOSE Telocytes (TCs), a novel type of stromal cells found in tissues, induce macrophage differentiation into classically activated macrophages (M1) types and enhance their phagocytic function. The purpose of this study was to investigate the inhibitory effects of TC-induced M1 macrophages on endometriosis (EMs). METHODS mouse uterine primary TCs and endometrial stromal cells (ESCs) were isolated and identified using double immunofluorescence staining. For the in vitro study, ESCs were treated with TC-induced M1 macrophages, and the vascular endothelial growth factor (VEGF), matrix metalloproteinase 9 (MMP9), and nuclear factor kappa B (NF-κb) genes were identified by quantitative real-time PCR (qRT-PCR) or western blotting (WB). For the in vivo study, an EMs mouse model received TC-conditioned medium (TCM) via abdominal administration, and characterized the inhibitory effects on growth (lesion weight, volume, and pathology), tissue-resident macrophages differentiation by immunostaining, angiogenic capacity (CD31 and VEGF), invasive capacity (MMP9), and NF-κb expression within EMs lesions. RESULTS immunofluorescent staining showed that uterine TCs expressed CD34+ and vimentin+, whereas ESCs expressed vimentin+ and cytokeratin-. At the cellular level, TC-induced M1 macrophages can significantly inhibit the expression of VEGF and MMP9 in ESCs through WB or qRT-PCR, possibly by suppressing the NF-κb pathway. The in vivo study showed that macrophages switch from the alternatively activated macrophages (M2) in untreated EMs lesions to the M1 subtype after TCM exposure. Thereby, TC-induced M1 macrophages contributed to the inhibition of EMs lesions. More importantly, this effect may be achieved by suppressing the expression of NF-κb to inhibit angiogenesis (CD31 and VEGF) and invasion (MMP9) in the tissue. CONCLUSION TC-induced M1 macrophages play a prevailing role in suppressing EMs by inhibiting angiogenic and invasive capacity through the NF-κb pathway, which provides a promising therapeutic approach for EMs.
Collapse
Affiliation(s)
- Xiao-Jiao Wei
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Soochow University, Suzhou City, Jiangsu Province 215006, PR China
| | - Yue-Lin Huang
- Department of Obstetrics and Gynecology, The Affiliated Hospital of Guizhou Medical University, Guiyang City, Guizhou Province 550000, PR China
| | - Tian-Quan Chen
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Soochow University, Suzhou City, Jiangsu Province 215006, PR China; Department of Obstetrics and Gynecology, The Affiliated Hospital of Yangzhou University, Yangzhou City, Jiangsu Province 225000, PR China
| | - Xiao-Jun Yang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Soochow University, Suzhou City, Jiangsu Province 215006, PR China.
| |
Collapse
|
21
|
Emeish WFA, Abd-ElHafeez HH, Alghamdi AAA, Ahmed M, Khalifa MO, El-Mansi AA, Abou-Elhamd AS, Khormi MM, Alkashif K, Soliman SA. Morphological changes in intraepithelial and stromal telocytes in Cyprinus carpio in response to salinity stress. Sci Rep 2023; 13:19987. [PMID: 37968439 PMCID: PMC10651833 DOI: 10.1038/s41598-023-43279-4] [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: 04/24/2023] [Accepted: 09/21/2023] [Indexed: 11/17/2023] Open
Abstract
Telocytes establish connections and communicate with various types of cells and structures. Few experimental studies have been performed on telocytes. In this study, we investigated the effect of salinity stress on telocytes in relation to osmoregulatory, immune, and stem cells. After exposing the common carp to 0.2 (control), 6, 10, or 14 ppt salinity, we extracted and fixed gill samples in glutaraldehyde, processed and embedded the samples in resin, and prepared semi-thin and ultrathin sections. Two types of telocytes were identified: intraepithelial and stromal telocytes. Intraepithelial telocytes were found to form part of the cellular lining of the lymphatic space and shed secretory vesicles into this space. Stromal telocytes were observed to shed their secretory vesicles into the secondary circulatory vessels. Both intraepithelial and stromal telocytes were enlarged and exhibited increased secretory activities as salinity increased. They exerted their effects via direct contact and paracrine signaling. The following changes were observed in samples from fish exposed to high salinity levels: chloride cells underwent hypertrophy, and their mitochondria became cigar-shaped; pavement cells were enlarged, and their micro-ridges became thin and elongated; stromal telocytes established contact with stem cells and skeletal myoblasts; skeletal muscle cells underwent hypertrophy; and macrophages and rodlet cells increased in number. In conclusion, our findings indicate that intraepithelial and stromal telocytes respond to salinity stress by activating cellular signaling and that they play major roles in osmoregulation, immunity, and regeneration.
Collapse
Affiliation(s)
- Walaa F A Emeish
- Department of Fish Diseases, Faculty of Veterinary Medicine, South Valley University, Qena, 83523, Egypt
| | - Hanan H Abd-ElHafeez
- Department of Cell and Tissues, Faculty of Veterinary Medicine, Assiut University, Assiut, 71526, Egypt.
| | | | - Madeha Ahmed
- Department of Histology, Faculty of Veterinary Medicine, Sohag University, Sohagt, 82524, Egypt
| | - Mahmoud Osman Khalifa
- Department of Anatomy and Embryology, Faculty of Veterinary Medicine, Aswan University, Aswan, Egypt
- Department of Molecular Bone Biology, Graduate School of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan
| | - Ahmed A El-Mansi
- Biology Department, Faculty of Science, King Khalid University, Abha, Saudi Arabia
| | - Alaa S Abou-Elhamd
- Department of Cell and Tissues, Faculty of Veterinary Medicine, Assiut University, Assiut, 71526, Egypt
- Department of Respiratory Therapy, Faculty of Applied Medical Sciences, Jazan University, Jazan, Saudi Arabia
| | - Mohsen M Khormi
- Department of Biology, College of Science, Jazan University, Jazan, Saudi Arabia
| | - Khalid Alkashif
- Physiology Department, faculty of Medicine, Merit University, Sohage, Egypt
| | - Soha A Soliman
- Department of Histology, Faculty of Veterinary Medicine, South Valley University, Qena, 83523, Egypt.
| |
Collapse
|
22
|
Sanches BDA, Tamarindo GH, da Silva ADT, Amaro GM, Dos Santos Maldarine J, Dos Santos VA, Guerra LHA, Baraldi CMB, Góes RM, Taboga SR, Carvalho HF. Stromal cell-derived factor 1 (SDF-1) increases the number of telocytes in ex vivo and in vitro assays. Histochem Cell Biol 2023; 160:419-433. [PMID: 37474667 DOI: 10.1007/s00418-023-02223-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/06/2023] [Indexed: 07/22/2023]
Abstract
Telocytes are interstitial cells that are present in various tissues, have long cytoplasmic projections known as telopodes, and are classified as CD34+ cells. Telopodes form extensive networks that permeate the stroma, and there is evidence that these networks connect several stromal cell types, giving them an important role in intercellular communication and the maintenance of tissue organisation. Data have also shown that these networks can be impaired and the number of telocytes reduced in association with many pathological conditions such as cancer and fibrosis. Thus, techniques that promote telocyte proliferation have become an important therapeutic target. In this study, ex vivo and in vitro assays were conducted to evaluate the impact on prostatic telocytes of SDF-1, a factor involved in the proliferation and migration of CD34+ cells. SDF-1 caused an increase in the number of telocytes in explants, as well as morphological changes that were possibly related to the proliferation of these cells. These changes involved the fusion of telopode segments, linked to an increase in cell body volume. In vitro assays also showed that SDF-1 enriched prostate stromal cells with telocytes. Altogether, the data indicate that SDF-1 may offer promising uses in therapies that aim to increase the number of telocytes. However, further studies are needed to confirm the efficiency of this factor in different tissues/pathological conditions.
Collapse
Affiliation(s)
- Bruno Domingos Azevedo Sanches
- Department of Structural and Functional Biology, Institute of Biology, State University of Campinas (UNICAMP), Bertrand Russel Av., Carl Von Linnaeus Street., Campinas, São Paulo, Brazil
| | - Guilherme Henrique Tamarindo
- Department of Structural and Functional Biology, Institute of Biology, State University of Campinas (UNICAMP), Bertrand Russel Av., Carl Von Linnaeus Street., Campinas, São Paulo, Brazil
| | - Alana Della Torre da Silva
- Laboratory of Microscopy and Microanalysis, Department of Biology, São Paulo State University (UNESP), Cristóvão Colombo St., São José Do Rio Preto, São Paulo, 2265, Brazil
| | - Gustavo Matheus Amaro
- Laboratory of Microscopy and Microanalysis, Department of Biology, São Paulo State University (UNESP), Cristóvão Colombo St., São José Do Rio Preto, São Paulo, 2265, Brazil
| | - Juliana Dos Santos Maldarine
- Department of Structural and Functional Biology, Institute of Biology, State University of Campinas (UNICAMP), Bertrand Russel Av., Carl Von Linnaeus Street., Campinas, São Paulo, Brazil
| | - Vitória Alário Dos Santos
- Laboratory of Microscopy and Microanalysis, Department of Biology, São Paulo State University (UNESP), Cristóvão Colombo St., São José Do Rio Preto, São Paulo, 2265, Brazil
| | - Luiz Henrique Alves Guerra
- Laboratory of Microscopy and Microanalysis, Department of Biology, São Paulo State University (UNESP), Cristóvão Colombo St., São José Do Rio Preto, São Paulo, 2265, Brazil
| | - Carolina Marques Bedolo Baraldi
- Laboratory of Microscopy and Microanalysis, Department of Biology, São Paulo State University (UNESP), Cristóvão Colombo St., São José Do Rio Preto, São Paulo, 2265, Brazil
| | - Rejane Maira Góes
- Laboratory of Microscopy and Microanalysis, Department of Biology, São Paulo State University (UNESP), Cristóvão Colombo St., São José Do Rio Preto, São Paulo, 2265, Brazil
| | - Sebastião Roberto Taboga
- Laboratory of Microscopy and Microanalysis, Department of Biology, São Paulo State University (UNESP), Cristóvão Colombo St., São José Do Rio Preto, São Paulo, 2265, Brazil
| | - Hernandes F Carvalho
- Department of Structural and Functional Biology, Institute of Biology, State University of Campinas (UNICAMP), Bertrand Russel Av., Carl Von Linnaeus Street., Campinas, São Paulo, Brazil.
| |
Collapse
|
23
|
Zawieja SD, Pea GA, Broyhill SE, Bromert KH, Norton CE, Kim HJ, Li M, Castorena-Gonzalez JA, Drumm BT, Davis MJ. Lymphatic muscle cells are the innate pacemaker cells regulating mouse lymphatic collecting vessel contractions. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.24.554619. [PMID: 37662284 PMCID: PMC10473772 DOI: 10.1101/2023.08.24.554619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/05/2023]
Abstract
Collecting lymphatic vessels (cLVs) exhibit spontaneous contractions with a pressure-dependent frequency, but the identity of the lymphatic pacemaker cell is still debated. By analogy to pacemakers in the GI and lower urinary tracts, proposed cLV pacemaker cells include interstitial cells of Cajal like cells (ICLC), pericytes, as well as the lymphatic muscle (LMCs) cells themselves. Here we tested the extent to which these cell types are invested into the mouse cLV wall and if any cell type exhibited morphological and functional processes characteristic of pacemaker cells: a contiguous network; spontaneous Ca2+ transients; and depolarization-induced propagated contractions. We employed inducible Cre (iCre) mouse models routinely used to target these specific cell populations including: c-kitCreERT2 to target ICLC; PdgfrβCreERT2 to target pericytes; PdgfrαCreER™ to target CD34+ adventitial fibroblast-like cells or ICLC; and Myh11CreERT2 to target LMCs. These specific inducible Cre lines were crossed to the fluorescent reporter ROSA26mT/mG, the genetically encoded Ca2+ sensor GCaMP6f, and the light-activated cation channel rhodopsin2 (ChR2). c-KitCreERT2 labeled both a sparse population of LECs and round adventitial cells that responded to the mast cell activator compound 48-80. PdgfrβCreERT2 drove recombination in both adventitial cells and LMCs, limiting its power to discriminate a pericyte specific population. PdgfrαCreER™ labeled a large population of interconnected, oak leaf-shaped cells primarily along the adventitial surface of the vessel. Titrated induction of the smooth muscle-specific Myh11CreERT2 revealed a LMC population with heterogeneous morphology. Only LMCs consistently, but heterogeneously, displayed spontaneous Ca2+ events during the diastolic period of the contraction cycle, and whose frequency was modulated in a pressure-dependent manner. Optogenetic depolarization through the expression of ChR2 by Myh11CreERT2, but not PdgfrαCreER™ or c-KitCreERT2, resulted in a propagated contraction. These findings support the conclusion that LMCs, or a subset of LMCs, are responsible for mouse cLV pacemaking.
Collapse
Affiliation(s)
- S D Zawieja
- Dept. of Medical Pharmacology & Physiology, University of Missouri, Columbia, Missouri
| | - G A Pea
- Dept. of Medical Pharmacology & Physiology, University of Missouri, Columbia, Missouri
| | - S E Broyhill
- Dept. of Medical Pharmacology & Physiology, University of Missouri, Columbia, Missouri
| | - K H Bromert
- Dept. of Medical Pharmacology & Physiology, University of Missouri, Columbia, Missouri
| | - C E Norton
- Dept. of Medical Pharmacology & Physiology, University of Missouri, Columbia, Missouri
| | - H J Kim
- Dept. of Medical Pharmacology & Physiology, University of Missouri, Columbia, Missouri
| | - M Li
- Dept. of Medical Pharmacology & Physiology, University of Missouri, Columbia, Missouri
| | | | - B T Drumm
- Smooth Muscle Research Centre, Dundalk Institute of Technology, Dundalk, Co. Louth, A91 K584, Ireland
| | - M J Davis
- Dept. of Medical Pharmacology & Physiology, University of Missouri, Columbia, Missouri
| |
Collapse
|
24
|
Babadag S, Çelebi-Saltik B. A cellular regulator of the niche: telocyte. Tissue Barriers 2023; 11:2131955. [PMID: 36218299 PMCID: PMC10606812 DOI: 10.1080/21688370.2022.2131955] [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: 09/02/2022] [Revised: 09/24/2022] [Accepted: 09/28/2022] [Indexed: 10/17/2022] Open
Abstract
Interstitial cells are present in the environment of stem cells in order to increase stem cell proliferation and differentiation and they are important to increase the efficiency of their transplantation. Telocytes (TCs) play an important role both in the preservation of tissue organ integrity and in the pathophysiology of many diseases, especially cancer. They make homo- or heterocellular contacts to form the structure of 3D network through their telopodes and deliver signaling molecules via a juxtacrine and/or paracrine association by budding shed vesicles into the vascular, nervous and endocrine systems. During this interaction, along with organelles, mRNA, microRNA, long non-coding RNA, and genomic DNA are transferred. This review article not only specifies the properties of TCs and their roles in the tissue organ microenvironment but also gives information about the factors that play a role in the transport of epigenetic information by TCs.
Collapse
Affiliation(s)
- Sena Babadag
- Department of Stem Cell Sciences, Hacettepe University Graduate School of Health Sciences, Sihhiye, Turkey
- Center for Stem Cell Research and Development, Hacettepe University, Sihhiye, Turkey
| | - Betül Çelebi-Saltik
- Department of Stem Cell Sciences, Hacettepe University Graduate School of Health Sciences, Sihhiye, Turkey
- Center for Stem Cell Research and Development, Hacettepe University, Sihhiye, Turkey
| |
Collapse
|
25
|
Rosa I, Nardini P, Fioretto BS, Guasti D, Romano E, Sgambati E, Marini M, Manetti M. Immunohistochemical and ultrastructural identification of telocytes in the lamina propria of human vaginal mucosa. Acta Histochem 2023; 125:152094. [PMID: 37757515 DOI: 10.1016/j.acthis.2023.152094] [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: 07/13/2023] [Revised: 09/14/2023] [Accepted: 09/20/2023] [Indexed: 09/29/2023]
Abstract
Since their relatively recent discovery, telocytes (TCs) have been described as peculiar cells strategically positioned in the stromal tissue component of multiple organ systems of the mammalian body including female reproductive organs (i.e., ovary, uterine tube, and uterus). Nevertheless, current knowledge of TCs in the vagina is very limited. The present study was therefore undertaken to investigate the existence and characteristics of TCs in the stromal tissue of human vaginal mucosa by means of immunohistochemistry, immunofluorescence confocal microscopy, and transmission electron microscopy. In the vaginal lamina propria, TCs were first identified by CD34 immunohistochemistry that revealed the presence of CD34+ stromal cells arranged in networks, especially around blood vessels. Double immunofluorescence confocal microscopy allowed to precisely distinguish the perivascular networks of CD34+ stromal cells lacking CD31 immunoreactivity from adjacent CD31+ microvessels. All the perivascular networks of TCs/CD34+ stromal cells situated in the vaginal lamina propria coexpressed platelet-derived growth factor receptor α, which strengthened their identification as TCs. Instead, vaginal mucosal TCs were immunophenotypically negative for c-kit/CD117. The ultrastructural examination confirmed the presence of TCs, namely stromal cells with characteristic cytoplasmic processes (i.e., telopodes) forming labyrinthine networks around blood vessels and releasing extracellular vesicles. Together, our morphological findings provide the first comprehensive demonstration that TCs reside in the human vaginal lamina propria, thus paving the way for further investigation of their putative functions in vaginal mucosal homeostasis and pathophysiology.
Collapse
Affiliation(s)
- Irene Rosa
- Section of Anatomy and Histology, Department of Experimental and Clinical Medicine, University of Florence, Largo Brambilla 3, 50134 Florence, Italy
| | - Patrizia Nardini
- Section of Anatomy and Histology, Department of Experimental and Clinical Medicine, University of Florence, Largo Brambilla 3, 50134 Florence, Italy; Imaging Platform, Department of Experimental and Clinical Medicine, University of Florence, Largo Brambilla 3, 50134 Florence, Italy
| | - Bianca Saveria Fioretto
- Section of Anatomy and Histology, Department of Experimental and Clinical Medicine, University of Florence, Largo Brambilla 3, 50134 Florence, Italy
| | - Daniele Guasti
- Section of Anatomy and Histology, Department of Experimental and Clinical Medicine, University of Florence, Largo Brambilla 3, 50134 Florence, Italy; Imaging Platform, Department of Experimental and Clinical Medicine, University of Florence, Largo Brambilla 3, 50134 Florence, Italy
| | - Eloisa Romano
- Section of Internal Medicine, Department of Experimental and Clinical Medicine, University of Florence, Largo Brambilla 3, 50134 Florence, Italy
| | - Eleonora Sgambati
- Department of Biosciences and Territory, University of Molise, Contrada Fonte Lappone, 86090 Pesche, Isernia, Italy
| | - Mirca Marini
- Section of Anatomy and Histology, Department of Experimental and Clinical Medicine, University of Florence, Largo Brambilla 3, 50134 Florence, Italy
| | - Mirko Manetti
- Section of Anatomy and Histology, Department of Experimental and Clinical Medicine, University of Florence, Largo Brambilla 3, 50134 Florence, Italy; Imaging Platform, Department of Experimental and Clinical Medicine, University of Florence, Largo Brambilla 3, 50134 Florence, Italy.
| |
Collapse
|
26
|
Mei L, Zhu Q, Bai X, Zhang Y, Huang H, Yang M, Shi Y, Liang C, Zhang Z, Chen Q. Cellular Evidence for Telocytes Mediating Electroacupuncture to Ameliorate Obesity in Mice. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2023; 29:1746-1754. [PMID: 37639834 DOI: 10.1093/micmic/ozad092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 07/10/2023] [Accepted: 08/06/2023] [Indexed: 08/31/2023]
Abstract
Electroacupuncture has been generally applied to target obesity, the principle of which is based on the meridian in traditional Chinese medicine. Although Telocytes (TCs) have been reported as the potential essence of meridians, their specific role in the electroacupuncture treatment of obesity remains unclear. Thus, we investigated the cellular evidence for TC-mediated electroacupuncture to alleviate obesity. Mice were divided into three groups as follows: electroacupuncture group (EA), control group (CG), and normal group (NG). The present study showed that the weight of perirenal white adipose tissue (rWAT), the serum level of total cholesterol, and the low-density lipoprotein cholesterol were all significantly decreased after electroacupuncture. Ultrastructurally, the prolongations (telopodes, Tps) of TCs were in direct contact with adipocytes, and lipid droplets were distributed on the surface of Tps. The proportions of double-positive fluorescent areas of TCs (CD34 and PDGFRα) were significantly elevated with concomitant elongated Tps in EA mice, as compared to those in CG mice. The expression of Cx43 and CD63 (gap junction and exosome markers) was significantly enhanced. These characteristics facilitated the transmission of electroacupuncture stimulation from skin to rWAT. We conclude that electroacupuncture relieved obesity by activating TCs morphologically, upregulating the gap junctions between TCs, and increasing the exosomes around TCs.
Collapse
Affiliation(s)
- Lu Mei
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Xuanwu District, Nanjing, Jiangsu Province 210095, China
| | - Qianmei Zhu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Xuanwu District, Nanjing, Jiangsu Province 210095, China
| | - Xuebing Bai
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Xuanwu District, Nanjing, Jiangsu Province 210095, China
| | - Yingxin Zhang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Xuanwu District, Nanjing, Jiangsu Province 210095, China
| | - Haixiang Huang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Xuanwu District, Nanjing, Jiangsu Province 210095, China
| | - Min Yang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Xuanwu District, Nanjing, Jiangsu Province 210095, China
| | - Yonghong Shi
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Xuanwu District, Nanjing, Jiangsu Province 210095, China
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Ziyue Road, Minhang District, Shanghai 200241, China
| | - Chunhua Liang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Xuanwu District, Nanjing, Jiangsu Province 210095, China
| | - Zhenwei Zhang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Xuanwu District, Nanjing, Jiangsu Province 210095, China
| | - Qiusheng Chen
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Xuanwu District, Nanjing, Jiangsu Province 210095, China
| |
Collapse
|
27
|
Gulinac M, Velikova T, Dikov D. Multinucleated giant cells of bladder mucosa are modified telocytes: Diagnostic and immunohistochemistry algorithm and relation to PD-L1 expression score. World J Clin Cases 2023; 11:6091-6104. [PMID: 37731584 PMCID: PMC10507540 DOI: 10.12998/wjcc.v11.i26.6091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 08/16/2023] [Accepted: 08/25/2023] [Indexed: 09/08/2023] Open
Abstract
BACKGROUND Multinucleated giant cells (MGCs) in bladder carcinomas are poorly studied. AIM To describe the function, morphogenesis, and origin of mononuclear and MGCs in urothelial carcinoma (UC) of the bladder in Bulgarian and French patients. METHODS Urothelial bladder carcinomas (n = 104) from 2016-2020 were analyzed retrospectively using immunohistochemical (IHC) and histochemical stain examination. Giant cells in the bladder stroma were found in 35.6% of cases, more often in high-grades. RESULTS We confirm that MGCs in the mucosa in UC of the bladder were positive for both mesenchymal and myofibroblast markers (vimentin, smooth muscle actin, Desmin, and CD34) and the macrophage marker CD68. Furthermore, IHC studies revealed the following profile of these cells: Positive for p16; negative for epithelial (CK AE1/AE3 and GATA-3), vascular (CD31), neural (PS100 and C-KIT), cambial, blastic (CD34-blasts and C-KIT), and immune markers (IG G, immunoglobulin G4, and PD-L1); no proliferative activity, possess no specific immune function, and cannot be used to calculate the Combined Positive Score scale. CONCLUSION In conclusion, the giant stromal cells in non-tumor and tumor bladder can be used as a characteristic and relatively constant, although nonspecific, histological marker for chronic bladder damage, reflecting the chronic irritation or inflammation. Likewise, according to the morphological and IHC of the mono- and multinucleated giant cells in the bladder, they are most likely represent telocytes capable of adapting their morphology to the pathology of the organ.
Collapse
Affiliation(s)
- Milena Gulinac
- General and Clinical Pathology, Medical University of Plovdiv, Plovdiv 4002, Bulgaria
- Medical Faculty, Sofia University, St. Kliment Ohridski, Sofia 1407, Bulgaria
| | - Tsvetelina Velikova
- Medical Faculty, Sofia University, St. Kliment Ohridski, Sofia 1407, Bulgaria
| | - Dorian Dikov
- Pathology, Grand Hospital de l’Este Francilien, Jossigny 1000, France
| |
Collapse
|
28
|
López-Pingarrón L, Almeida H, Pereboom-Maicas D, García JJ. Pathophysiological Implications of Interstitial Cajal-like Cells (ICC-like) in Uterus: A Comparative Study with Gastrointestinal ICCs. Curr Issues Mol Biol 2023; 45:7557-7571. [PMID: 37754260 PMCID: PMC10528666 DOI: 10.3390/cimb45090476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 09/11/2023] [Accepted: 09/14/2023] [Indexed: 09/28/2023] Open
Abstract
The main function of interstitial cells of Cajal (ICCs) is to regulate gastrointestinal peristalsis by acting as a "pacemaker" cell by generating spontaneous slow electrical waves. In 2005, electron microscopy revealed a cell type similar to ICCs (ICC-like) outside the gastrointestinal tract, with contractile activity and c-Kit+ immunohistochemistry shared with ICCs. Among the locations where ICC-like cells have been observed, it is in the uterus where they have a significant functional and pathophysiological role. These cells are involved in obstetric phenomena of contractile action, such as ascending sperm transport, embryo implantation, pregnancy, delivery, and the expulsion of menstrual debris. Within the pathophysiology related to these cells, we find obstetric alterations such as recurrent miscarriages, premature deliveries, abolition of uterine contractions, and failures of embryo implantation, in addition to other common conditions in the fertile age, such as endometriosis and leiomyoma.
Collapse
Affiliation(s)
- Laura López-Pingarrón
- Department of Pharmacology, Physiology and Legal and Forensic Medicine, Faculty of Medicine, University of Zaragoza, 50009 Zaragoza, Spain; (D.P.-M.); (J.J.G.)
| | - Henrique Almeida
- i3S—Instituto de Investigação e Inovação em Saúde, Porto University, 4200-135 Porto, Portugal
- Department of Biomedicine, Faculty of Medicine, Porto University, 4200-319 Porto, Portugal
- Department of Obstetrics and Gynecology, Hospital-CUF Porto, 4100-180 Porto, Portugal
| | - Desirée Pereboom-Maicas
- Department of Pharmacology, Physiology and Legal and Forensic Medicine, Faculty of Medicine, University of Zaragoza, 50009 Zaragoza, Spain; (D.P.-M.); (J.J.G.)
| | - Joaquín J. García
- Department of Pharmacology, Physiology and Legal and Forensic Medicine, Faculty of Medicine, University of Zaragoza, 50009 Zaragoza, Spain; (D.P.-M.); (J.J.G.)
| |
Collapse
|
29
|
Díaz-Flores L, Gutiérrez R, González-Gómez M, García MDP, Carrasco JL, Madrid JF, Díaz-Flores L. Telocytes/CD34+ Stromal Cells in the Normal, Hyperplastic, and Adenomatous Human Parathyroid Glands. Int J Mol Sci 2023; 24:12118. [PMID: 37569493 PMCID: PMC10419317 DOI: 10.3390/ijms241512118] [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: 06/14/2023] [Revised: 07/25/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023] Open
Abstract
Telocytes/CD34+ stromal cells (TCs/CD34+ SCs) have been studied in numerous organs and tissues, but their presence and characteristics in the parathyroid glands have not been explored. Using immunological and ultrastructural procedures, we assess the location, arrangement, and behavior of TCs/CD34+ SCs in normal human parathyroids, during their development and in their most frequent pathologic conditions. In normal parathyroids, TCs/CD34+ SCs show a small somatic body and long thin processes with a moniliform aspect, form labyrinthine systems, connect other neighboring TCs/CD34+ SCs, vessels, adipocytes, and parenchymal cells directly or by extracellular vesicles, and associate with collagen I. TCs/CD34+ SCs and collagen I are absent around vessels and adipocytes within parenchymal clusters. In developing parathyroids, TCs/CD34+ SC surround small parenchymal nests and adipocytes. In hyperplastic parathyroids, TCs/CD34+ SCs are prominent in some thickened internodular septa and surround small extraglandular parenchymal cell nests. TCs/CD34+ SCs are present in delimiting regions with compressed parathyroids and their capsule in adenomas but absent in most adenomatous tissue. In conclusion, TCs/CD34+ SCs are an important cellular component in the human parathyroid stroma, except around vessels within parenchymal nests. They show typical characteristics, including those of connecting cells, are present in developing parathyroids, and participate in the most frequent parathyroid pathology, including hyperplastic and adenomatous parathyroids.
Collapse
Affiliation(s)
- Lucio Díaz-Flores
- Department of Basic Medical Sciences, Faculty of Medicine, University of La Laguna, 38071 La Laguna, Spain (J.L.C.)
| | - Ricardo Gutiérrez
- Department of Basic Medical Sciences, Faculty of Medicine, University of La Laguna, 38071 La Laguna, Spain (J.L.C.)
| | - Miriam González-Gómez
- Department of Basic Medical Sciences, Faculty of Medicine, University of La Laguna, 38071 La Laguna, Spain (J.L.C.)
- Canary Biomedical Technology Institute, University of La Laguna, 38071 La Laguna, Spain
| | - Maria del Pino García
- Department of Pathology, Eurofins Megalab–Hospiten Hospitals, 38100 La Laguna, Spain
| | - Jose Luis Carrasco
- Department of Basic Medical Sciences, Faculty of Medicine, University of La Laguna, 38071 La Laguna, Spain (J.L.C.)
| | - Juan Francisco Madrid
- Department of Cell Biology and Histology, School of Medicine, Campus of International Excellence “Campus Mare Nostrum”, IMIB-Arrixaca, University of Murcia, 30100 Murcia, Spain;
| | - Lucio Díaz-Flores
- Department of Basic Medical Sciences, Faculty of Medicine, University of La Laguna, 38071 La Laguna, Spain (J.L.C.)
| |
Collapse
|
30
|
Taatjes DJ, Roth J. In focus in HCB. Histochem Cell Biol 2023:10.1007/s00418-023-02219-z. [PMID: 37368141 DOI: 10.1007/s00418-023-02219-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Affiliation(s)
- Douglas J Taatjes
- Department of Pathology and Laboratory Medicine, Larner College of Medicine, University of Vermont, Burlington, VT, 05405, USA.
| | - Jürgen Roth
- University of Zurich, 8091, Zurich, Switzerland
| |
Collapse
|
31
|
Bai X, Mei L, Shi Y, Huang H, Guo Y, Liang C, Yang M, Wu R, Zhang Y, Chen Q. The Cellular Mechanism of Acupuncture for Ulcerative Colitis based on the Communication of Telocytes. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2023; 29:1190-1204. [PMID: 37749671 DOI: 10.1093/micmic/ozad028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 01/16/2023] [Accepted: 02/21/2023] [Indexed: 09/27/2023]
Abstract
Acupuncture can ameliorate or treat diseases according to the meridian theory in traditional Chinese medicine (TCM); however, its mechanism has not been scientifically clarified. On the other hand, telocytes (TCs) are morphologically in accordance with the meridian system, which needs further cytological investigations and acupuncture confirmation. The present study showed that acupuncture could activate TCs in several ways, alleviating rabbit ulcerative colitis. TCs could cytologically communicate the acupoints, the acupuncture sites in skin with their corresponding large intestine by TC homo-cellular junctions, exosomes around TCs, and TC-mediated nerves or blood vessels. TCs expressed transient receptor potential vanilloid type 4, the mechanosensitive channel protein that can transduce the mechanical stimulation of acupuncture into biochemical signals transferring along the extremely thin and long TCs. Collectively, a cellular mechanism diagram of acupuncture was concluded based on TC characteristics. Those results also confirmed the viewpoint that TCs were the key cells of meridian essence in TCM.
Collapse
Affiliation(s)
- Xuebing Bai
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province 210095, China
| | - Lu Mei
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province 210095, China
| | - Yonghong Shi
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province 210095, China
- Chinese Academy of Agricultural Sciences, Shanghai Veterinary Institute, Shanghai 200241, China
| | - Haixiang Huang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province 210095, China
| | - Yanna Guo
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province 210095, China
| | - Chunhua Liang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province 210095, China
| | - Min Yang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province 210095, China
| | - Ruizhi Wu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province 210095, China
| | - Yingxin Zhang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province 210095, China
| | - Qiusheng Chen
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu Province 210095, China
| |
Collapse
|
32
|
Fernandez-Flores A, Cassarino DS. Type 2 Dermal Dendrocytes Are Telocytes and So Should They Be Called. Am J Dermatopathol 2023; 45:351-353. [PMID: 36939132 DOI: 10.1097/dad.0000000000002415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2023]
Affiliation(s)
- Angel Fernandez-Flores
- Department of Cellular Pathology, Hospital El Bierzo, Ponferrada, Spain
- Department of Cellular Pathology, Hospital de la Reina, Ponferrada, Spain
- Department of Research, Institute for Biomedical Research of A Coruña (INIBIC), University of A Coruña (UDC), A Coruña, Spain
| | - David S Cassarino
- Departments of Pathology and Dermatology, Los Angeles Medical Center (LAMC), Southern California Kaiser Permanente, Los Angeles, CA
| |
Collapse
|
33
|
Etcharren V, Mouguelar H, Aguilar Valenciano JJ. Identification of telocytes in the oviduct of the mare. Theriogenology 2023; 205:18-26. [PMID: 37084500 DOI: 10.1016/j.theriogenology.2023.04.012] [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: 02/04/2023] [Revised: 03/29/2023] [Accepted: 04/14/2023] [Indexed: 04/23/2023]
Abstract
Telocytes (TCs), a recently discovered special type of stromal cells, have been identified in many organs of many species, including the female and male reproductive system, with proposed multiple potential bio-functions such as homeostasis, immunomodulation, tissue remodeling and regeneration, embryogenesis, angiogenesis and even tumorigenesis. The aim of this study was to investigate the existence, and characteristics of telocytes in normal equine oviduct. To identify them, we used routine light microscopy, non-conventional light microscopy (NCLM), transmission electron microscopy (TEM), and immunohistochemistry. We found that telocytes of the equine oviduct can be recognized in fixed specimens by light microscopy (methylene blue staining), with more details on Epon semi-thin sections (toluidine blue staining) by NCLM, and that they showed positive immunostaining for CD34. The telocytes, with their typical long and moniliform prolongations, formed networks in the stromal space of the submucosa, muscular and serosa layers, particularly in the lamina propia where they were observed in greater quantity. By TEM we have also confirmed the presence of cells ultrastructurally identifiable as telocytes (cells with telopodes alternating podomers and podoms) in the aforementioned locations. Direct intercellular contacts between epithelial cells and neighboring telocytes were evidenced. EIn conclusion, we demonstrated that telocytes are present in the equine oviduct as previously reported in other species. The potential implication of telocytes in multiple potential functions of physiological and pathological processes deserves further investigation.
Collapse
Affiliation(s)
- V Etcharren
- Departamento de Producción Animal, Facultad de Agronomía y Veterinaria, Universidad Nacional de Rio Cuarto, Argentina
| | - H Mouguelar
- Departamento de Anatomía, Facultad de Agronomía y Veterinaria, National University of Río Cuarto, Córdoba, Argentina
| | - J J Aguilar Valenciano
- Departamento de Producción Animal, Facultad de Agronomía y Veterinaria, Universidad Nacional de Rio Cuarto, Argentina.
| |
Collapse
|
34
|
McCarthy N, Tie G, Madha S, He R, Kraiczy J, Maglieri A, Shivdasani RA. Smooth muscle contributes to the development and function of a layered intestinal stem cell niche. Dev Cell 2023; 58:550-564.e6. [PMID: 36924771 PMCID: PMC10089980 DOI: 10.1016/j.devcel.2023.02.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 12/05/2022] [Accepted: 02/20/2023] [Indexed: 03/17/2023]
Abstract
Wnt and Rspondin (RSPO) signaling drives proliferation, and bone morphogenetic protein inhibitors (BMPi) impede differentiation, of intestinal stem cells (ISCs). Here, we identify the mouse ISC niche as a complex, multi-layered structure that encompasses distinct mesenchymal and smooth muscle populations. In young and adult mice, diverse sub-cryptal cells provide redundant ISC-supportive factors; few of these are restricted to single cell types. Niche functions refine during postnatal crypt morphogenesis, in part to oppose the dense aggregation of differentiation-promoting BMP+ sub-epithelial myofibroblasts at crypt-villus junctions. Muscularis mucosae, a specialized muscle layer, first appears during this period and supplements neighboring RSPO and BMPi sources. Components of this developing niche are conserved in human fetuses. The in vivo ablation of mouse postnatal smooth muscle increases BMP signaling activity, potently limiting a pre-weaning burst of crypt fission. Thus, distinct and progressively specialized mesenchymal cells together create the milieu that is required to propagate crypts during rapid organ growth and to sustain adult ISCs.
Collapse
Affiliation(s)
- Neil McCarthy
- Department of Medical Oncology and Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, Boston, MA 02215, USA; Department of Medicine, Harvard Medical School, Boston, MA 02115, USA.
| | - Guodong Tie
- Department of Medical Oncology and Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Shariq Madha
- Department of Medical Oncology and Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Ruiyang He
- Department of Medical Oncology and Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Judith Kraiczy
- Department of Medical Oncology and Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, Boston, MA 02215, USA; Department of Medicine, Harvard Medical School, Boston, MA 02115, USA
| | - Adrianna Maglieri
- Department of Medical Oncology and Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Ramesh A Shivdasani
- Department of Medical Oncology and Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, Boston, MA 02215, USA; Department of Medicine, Harvard Medical School, Boston, MA 02115, USA; Harvard Stem Cell Institute, Cambridge, MA 02139, USA.
| |
Collapse
|
35
|
Dama G, Hu X, Yan Y, Li Y, Li H, Yang F, Liu Y, Lin J. Identification and protective role of CD34 + stromal cells/telocytes in experimental autoimmune encephalomyelitis (EAE) mouse spleen. Histochem Cell Biol 2023:10.1007/s00418-023-02186-5. [PMID: 37014442 DOI: 10.1007/s00418-023-02186-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/28/2023] [Indexed: 04/05/2023]
Abstract
Experimental autoimmune encephalomyelitis (EAE) is a classical animal model of human multiple sclerosis (MS) that is most commonly used to study the neuropathology and therapeutic effects of the disease. Telocytes (TCs) are a specialized type of interstitial or mesenchymal cell first identified by Popescu in various tissues and organs. However, the existence, distribution and role of CD34+ stromal cells (SCs)/TCs in the EAE-induced mouse spleen remain to be elucidated. We conducted immunohistochemistry, immunofluorescence (double staining for CD34 and c-kit, vimentin, F4/80, CD163, Nanog, Sca-1, CD31 or tryptase) and transmission electron microscopy experiments to investigate the existence, distribution and role of CD34+ SCs/TCs in the EAE-induced mouse spleen. Interestingly, immunohistochemistry, double-immunofluorescence, and transmission electron microscopy results revealed that CD34+ SCs/TCs were significantly upregulated in the EAE mouse spleen. Immunohistochemical or double-immunofluorescence staining of CD34+ SCs/TCs showed positive expression for CD34, c-kit, vimentin, CD34/vimentin, c-kit/vimentin and CD34/c-kit, and negative expression for CD31 and tryptase. Transmission electron microscopy (TEM) results demonstrated that CD34+ SCs/TCs established close connections with lymphocytes, reticular cells, macrophages, endothelial cells and erythrocytes. Furthermore, we also found that M1 (F4/80) or M2 (CD163) macrophages, and haematopoietic, pluripotent stem cells were markedly increased in EAE mice. Our results suggest that CD34+ SCs/TCs are abundant and may play a contributing role in modulating the immune response, recruiting macrophages and proliferation of haematopoietic and pluripotent stem cells following injury to promote tissue repair and regeneration in EAE mouse spleens. This suggests that their transplantation combined with stem cells might represent a promising therapeutic target for the treatment and prevention of multiple autoimmune and chronic inflammatory disorders.
Collapse
Affiliation(s)
- Ganesh Dama
- Henan Joint International Research Laboratory of Stem Cell Medicine, Stem Cell and Biotherapy Engineering Research Center of Henan, Xinxiang Medical University, East of JinSui Road #601, Xinxiang City, 453003, Henan Province, China
- Department of Community Health, Advanced Medical and Dental Institute, Universiti Sains Malaysia, 13200, Kepala Batas, Pulau Pinang, Malaysia
| | - Xiaoxi Hu
- College of Life Sciences and Technology, Stem Cell and Biotherapy Engineering Research Center of Henan, Xinxiang Medical University, East of JinSui Road # 601, Xinxiang, 453003, China
| | - Yushan Yan
- College of Life Sciences and Technology, Stem Cell and Biotherapy Engineering Research Center of Henan, Xinxiang Medical University, East of JinSui Road # 601, Xinxiang, 453003, China
| | - Yonghai Li
- College of Life Sciences and Technology, Stem Cell and Biotherapy Engineering Research Center of Henan, Xinxiang Medical University, East of JinSui Road # 601, Xinxiang, 453003, China
| | - Han Li
- College of Life Sciences and Technology, Stem Cell and Biotherapy Engineering Research Center of Henan, Xinxiang Medical University, East of JinSui Road # 601, Xinxiang, 453003, China
| | - Fen Yang
- Henan Joint International Research Laboratory of Stem Cell Medicine, Stem Cell and Biotherapy Engineering Research Center of Henan, Xinxiang Medical University, East of JinSui Road #601, Xinxiang City, 453003, Henan Province, China
- College of Medical Engineering, Xinxiang Medical University, Xinxiang, 453003, China
| | - Yanli Liu
- Henan Joint International Research Laboratory of Stem Cell Medicine, Stem Cell and Biotherapy Engineering Research Center of Henan, Xinxiang Medical University, East of JinSui Road #601, Xinxiang City, 453003, Henan Province, China.
- College of Life Sciences and Technology, Stem Cell and Biotherapy Engineering Research Center of Henan, Xinxiang Medical University, East of JinSui Road # 601, Xinxiang, 453003, China.
| | - Juntang Lin
- Henan Joint International Research Laboratory of Stem Cell Medicine, Stem Cell and Biotherapy Engineering Research Center of Henan, Xinxiang Medical University, East of JinSui Road #601, Xinxiang City, 453003, Henan Province, China.
- College of Life Sciences and Technology, Stem Cell and Biotherapy Engineering Research Center of Henan, Xinxiang Medical University, East of JinSui Road # 601, Xinxiang, 453003, China.
- College of Medical Engineering, Xinxiang Medical University, Xinxiang, 453003, China.
| |
Collapse
|
36
|
Sharkey KA, Mawe GM. The enteric nervous system. Physiol Rev 2023; 103:1487-1564. [PMID: 36521049 PMCID: PMC9970663 DOI: 10.1152/physrev.00018.2022] [Citation(s) in RCA: 51] [Impact Index Per Article: 51.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 12/12/2022] [Accepted: 12/15/2022] [Indexed: 12/23/2022] Open
Abstract
Of all the organ systems in the body, the gastrointestinal tract is the most complicated in terms of the numbers of structures involved, each with different functions, and the numbers and types of signaling molecules utilized. The digestion of food and absorption of nutrients, electrolytes, and water occurs in a hostile luminal environment that contains a large and diverse microbiota. At the core of regulatory control of the digestive and defensive functions of the gastrointestinal tract is the enteric nervous system (ENS), a complex system of neurons and glia in the gut wall. In this review, we discuss 1) the intrinsic neural control of gut functions involved in digestion and 2) how the ENS interacts with the immune system, gut microbiota, and epithelium to maintain mucosal defense and barrier function. We highlight developments that have revolutionized our understanding of the physiology and pathophysiology of enteric neural control. These include a new understanding of the molecular architecture of the ENS, the organization and function of enteric motor circuits, and the roles of enteric glia. We explore the transduction of luminal stimuli by enteroendocrine cells, the regulation of intestinal barrier function by enteric neurons and glia, local immune control by the ENS, and the role of the gut microbiota in regulating the structure and function of the ENS. Multifunctional enteric neurons work together with enteric glial cells, macrophages, interstitial cells, and enteroendocrine cells integrating an array of signals to initiate outputs that are precisely regulated in space and time to control digestion and intestinal homeostasis.
Collapse
Affiliation(s)
- Keith A Sharkey
- Hotchkiss Brain Institute and Snyder Institute for Chronic Diseases, Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Gary M Mawe
- Department of Neurological Sciences, Larner College of Medicine, University of Vermont, Burlington, Vermont
| |
Collapse
|
37
|
Pederzoli F, Raffo M, Pakula H, Ravera F, Nuzzo PV, Loda M. "Stromal cells in prostate cancer pathobiology: friends or foes?". Br J Cancer 2023; 128:930-939. [PMID: 36482187 PMCID: PMC10006214 DOI: 10.1038/s41416-022-02085-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/16/2022] [Accepted: 11/18/2022] [Indexed: 12/13/2022] Open
Abstract
The genomic, epigenetic and metabolic determinants of prostate cancer pathobiology have been extensively studied in epithelial cancer cells. However, malignant cells constantly interact with the surrounding environment-the so-called tumour microenvironment (TME)-which may influence tumour cells to proliferate and invade or to starve and die. In that regard, stromal cells-including fibroblasts, smooth muscle cells and vasculature-associated cells-constitute an essential fraction of the prostate cancer TME. However, they have been largely overlooked compared to other cell types (i.e. immune cells). Indeed, their importance in prostate physiology starts at organogenesis, as the soon-to-be prostate stroma determines embryonal epithelial cells to commit toward prostatic differentiation. Later in life, the appearance of a reactive stroma is linked to the malignant transformation of epithelial cells and cancer progression. In this Review, we discuss the main mesenchymal cell populations of the prostate stroma, highlighting their dynamic role in the transition of the healthy prostate epithelium to cancer. A thorough understanding of those populations, their phenotypes and their transcriptional programs may improve our understanding of prostate cancer pathobiology and may help to exploit prostate stroma as a biomarker of patient stratification and as a therapeutic target.
Collapse
Affiliation(s)
- Filippo Pederzoli
- Department of Pathology and Laboratory Medicine, New York Presbyterian Hospital, Weill Cornell Medicine, New York, NY, USA.
| | - Massimiliano Raffo
- Department of Pathology and Laboratory Medicine, New York Presbyterian Hospital, Weill Cornell Medicine, New York, NY, USA
- Vita-Salute San Raffaele University, Milan, Italy
| | - Hubert Pakula
- Department of Pathology and Laboratory Medicine, New York Presbyterian Hospital, Weill Cornell Medicine, New York, NY, USA
| | - Francesco Ravera
- Department of Pathology and Laboratory Medicine, New York Presbyterian Hospital, Weill Cornell Medicine, New York, NY, USA
- Department of Internal Medicine, Università Degli Studi di Genova, Genova, Italy
| | - Pier Vitale Nuzzo
- Department of Pathology and Laboratory Medicine, New York Presbyterian Hospital, Weill Cornell Medicine, New York, NY, USA
| | - Massimo Loda
- Department of Pathology and Laboratory Medicine, New York Presbyterian Hospital, Weill Cornell Medicine, New York, NY, USA
- Meyer Cancer Center, Weill Cornell Medicine, New York, NY, USA
| |
Collapse
|
38
|
Yang D, Yuan L, Chen S, Zhang Y, Ma X, Xing Y, Song J. Morphological and histochemical identification of telocytes in adult yak epididymis. Sci Rep 2023; 13:5295. [PMID: 37002252 PMCID: PMC10066225 DOI: 10.1038/s41598-023-32220-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Accepted: 03/24/2023] [Indexed: 04/03/2023] Open
Abstract
Telocytes (TCs) are a newly discovered type of mesenchymal cell that are closely related to the tissue's internal environment. The study aimed to investigate the morphological identification of TCs in the epididymis of adult yak and their role in the local microenvironment. In this study, transmission electron microscopy (TEM), scanning electron microscopy, immunofluorescence, qRT-PCR, and western blotting were used to analyze the cell morphology of TCs. The results showed that there are two types of TCs in the epididymal stroma of yak by TEM; one type is distributed around the capillaries with full cell bodies, longer TPs, and a large number of secretory vesicles; the other is distributed outside the basement membrane with irregularly long, striped, large nuclei and short telopodes (TPs). In addition, these TCs formed complex TC cell networks through TPs with epididymal interstitial capillaries and basal fibroblasts. TCs often appear near the capillaries and basement membrane by special staining. The surface markers of TCs (CD34, vimentin, and CD117) were positively expressed in the epididymal stroma and epithelium by immunohistochemistry, and immunofluorescence co-expression of vimentin + CD34 and CD117 + CD34 was observed on the surface of TCs. The trends in the mRNA and protein expression of TCs surface markers revealed expression was highest in the caput epididymis. In summary, this is first report of TCs in the epididymis of yak, and two phenotypes of TCs were observed. The existence and distribution characteristics of TCs in the epididymis of plateau yaks provide important clues for further study of the adaptation to reproductive function in the plateau.
Collapse
Affiliation(s)
- Dapeng Yang
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, 730070, China
- Key Laboratory of Animal Reproductive Physiology and Reproductive Regulation of Gansu Province, Lanzhou, 730070, China
| | - Ligang Yuan
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, 730070, China.
- Key Laboratory of Animal Reproductive Physiology and Reproductive Regulation of Gansu Province, Lanzhou, 730070, China.
| | - Shaoyu Chen
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, 730070, China
| | - Yong Zhang
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, 730070, China
- Key Laboratory of Animal Reproductive Physiology and Reproductive Regulation of Gansu Province, Lanzhou, 730070, China
| | - Xiaojie Ma
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, 730070, China
| | - Yindi Xing
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, 730070, China
| | - Juanjuan Song
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, 730070, China
| |
Collapse
|
39
|
A View on Uterine Leiomyoma Genesis through the Prism of Genetic, Epigenetic and Cellular Heterogeneity. Int J Mol Sci 2023; 24:ijms24065752. [PMID: 36982825 PMCID: PMC10056617 DOI: 10.3390/ijms24065752] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 03/07/2023] [Accepted: 03/15/2023] [Indexed: 03/19/2023] Open
Abstract
Uterine leiomyomas (ULs), frequent benign tumours of the female reproductive tract, are associated with a range of symptoms and significant morbidity. Despite extensive research, there is no consensus on essential points of UL initiation and development. The main reason for this is a pronounced inter- and intratumoral heterogeneity resulting from diverse and complicated mechanisms underlying UL pathobiology. In this review, we comprehensively analyse risk and protective factors for UL development, UL cellular composition, hormonal and paracrine signalling, epigenetic regulation and genetic abnormalities. We conclude the need to carefully update the concept of UL genesis in light of the current data. Staying within the framework of the existing hypotheses, we introduce a possible timeline for UL development and the associated key events—from potential prerequisites to the beginning of UL formation and the onset of driver and passenger changes.
Collapse
|
40
|
Ahmed AM, Hussein MR. Telocytes in Cutaneous Biology: A Reappraisal. ACTAS DERMO-SIFILIOGRAFICAS 2023; 114:T229-T239. [PMID: 36690154 DOI: 10.1016/j.ad.2022.08.029] [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: 05/24/2022] [Accepted: 08/30/2022] [Indexed: 01/22/2023] Open
Abstract
The telocytes (TCs) are novel interstitial cells that have been overlooked for a long time due to their histologic similarity to other stromal cells. TCs can be separated from the stromal cells based on their distinct immunohistochemical, ultrastructural, and molecular features. Functionally, TCs are involved in the tissue renewal, mechanical support, and immune modulation. These cells are also involved in the signal transduction either through their direct interactions with the neighboring cells or through the paracrine signaling via extracellular vesicles. TCs are damaged in several inflammatory and fibrotic conditions such as ulcerative colitis, Crohn's disease, hepatic fibrosis, psoriasis, and systemic sclerosis. The transplantation of TCs in the damaged tissue can promote tissue regeneration. Therefore, enhancing tissue TCs either by their transplantation or by promoting their survival and growth using novel medications represents novel therapeutic strategy in the future. In this review, we addressed several aspects of TCs including their origin, distribution, morphologic features, and functions. We also discussed their involvement of the cutaneous TCs in the development various pathologic conditions.
Collapse
Affiliation(s)
- A M Ahmed
- Department of Pathology, Faculty of Medicine, Assiut University, Assiut, Egipto
| | - M R Hussein
- Department of Pathology, Faculty of Medicine, Assiut University, Assiut, Egipto.
| |
Collapse
|
41
|
Telocytes in Cutaneous Biology: A Reappraisal. ACTAS DERMO-SIFILIOGRAFICAS 2023; 114:229-239. [PMID: 36332689 DOI: 10.1016/j.ad.2022.08.023] [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: 05/24/2022] [Revised: 08/24/2022] [Accepted: 08/30/2022] [Indexed: 12/13/2022] Open
Abstract
The telocytes (TCs) are novel interstitial cells that have been overlooked for a long time due to their histologic similarity to other stromal cells. TCs can be separated from the stromal cells based on their distinct immunohistochemical, ultrastructural, and molecular features. Functionally, TCs are involved in the tissue renewal, mechanical support, and immune modulation. These cells are also involved in the signal transduction either through their direct interactions with the neighboring cells or through the paracrine signaling via extracellular vesicles. TCs are damaged in several inflammatory and fibrotic conditions such as ulcerative colitis, Crohn's disease, hepatic fibrosis, psoriasis, and systemic sclerosis. The transplantation of TCs in the damaged tissue can promote tissue regeneration. Therefore, enhancing tissue TCs either by their transplantation or by promoting their survival and growth using novel medications represents novel therapeutic strategy in the future. In this review, we addressed several aspects of TCs including their origin, distribution, morphologic features, and functions. We also discussed their involvement of the cutaneous TCs in the development various pathologic conditions.
Collapse
|
42
|
Díaz-Flores L, Gutiérrez R, González-Gómez M, García MDP, Palmas M, Carrasco JL, Madrid JF, Díaz-Flores L. Delimiting CD34+ Stromal Cells/Telocytes Are Resident Mesenchymal Cells That Participate in Neovessel Formation in Skin Kaposi Sarcoma. Int J Mol Sci 2023; 24:ijms24043793. [PMID: 36835203 PMCID: PMC9962853 DOI: 10.3390/ijms24043793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 02/10/2023] [Accepted: 02/11/2023] [Indexed: 02/16/2023] Open
Abstract
Kaposi sarcoma (KS) is an angioproliferative lesion in which two main KS cell sources are currently sustained: endothelial cells (ECs) and mesenchymal/stromal cells. Our objective is to establish the tissue location, characteristics and transdifferentiation steps to the KS cells of the latter. For this purpose, we studied specimens of 49 cases of cutaneous KS using immunochemistry and confocal and electron microscopy. The results showed that delimiting CD34+ stromal cells/Telocytes (CD34+SCs/TCs) in the external layer of the pre-existing blood vessels and around skin appendages form small convergent lumens, express markers for ECs of blood and lymphatic vessels, share ultrastructural characteristics with ECs and participate in the origin of two main types of neovessels, the evolution of which gives rise to lymphangiomatous or spindle-cell patterns-the substrate of the main KS histopathological variants. Intraluminal folds and pillars (papillae) are formed in the neovessels, which suggests they increase by vessel splitting (intussusceptive angiogenesis and intussusceptive lymphangiogenesis). In conclusion, delimiting CD34+SCs/TCs are mesenchymal/stromal cells that can transdifferentiate into KS ECs, participating in the formation of two types of neovessels. The subsequent growth of the latter involves intussusceptive mechanisms, originating several KS variants. These findings are of histogenic, clinical and therapeutic interest.
Collapse
Affiliation(s)
- Lucio Díaz-Flores
- Department of Basic Medical Sciences, Faculty of Medicine, University of La Laguna, 38071 Tenerife, Spain
- Correspondence: ; Tel.: +34-922-319317
| | - Ricardo Gutiérrez
- Department of Basic Medical Sciences, Faculty of Medicine, University of La Laguna, 38071 Tenerife, Spain
| | - Miriam González-Gómez
- Department of Basic Medical Sciences, Faculty of Medicine, University of La Laguna, 38071 Tenerife, Spain
- Instituto de Tecnologías Biomédicas de Canarias, University of La Laguna, 38071 Tenerife, Spain
| | | | - Marta Palmas
- Department of Basic Medical Sciences, Faculty of Medicine, University of La Laguna, 38071 Tenerife, Spain
| | - Jose Luis Carrasco
- Department of Basic Medical Sciences, Faculty of Medicine, University of La Laguna, 38071 Tenerife, Spain
| | - Juan Francisco Madrid
- Department of Cell Biology and Histology, School of Medicine, Campus of International Excellence “Campus Mare Nostrum”, IMIB-Arrixaca, University of Murcia, 30100 Murcia, Spain
| | - Lucio Díaz-Flores
- Department of Basic Medical Sciences, Faculty of Medicine, University of La Laguna, 38071 Tenerife, Spain
| |
Collapse
|
43
|
Stromal regulation of the intestinal barrier. Mucosal Immunol 2023; 16:221-231. [PMID: 36708806 DOI: 10.1016/j.mucimm.2023.01.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 12/27/2022] [Accepted: 01/12/2023] [Indexed: 01/26/2023]
Abstract
The intestinal barrier is a complex structure that allows the absorption of nutrients while ensuring protection against intestinal pathogens and balanced immunity. The development and maintenance of a functional intestinal barrier is a multifactorial process that is only partially understood. Here we review novel findings on the emerging role of mesenchymal cells in this process using insights gained from lineage tracing approaches, Cre-based gene deletion, and single-cell transcriptomics. The current evidence points toward a key organizer role for distinct mesenchymal lineages in intestinal development and homeostasis, regulating both epithelial and immune components of the intestinal barrier. We further discuss recent findings on functional mesenchymal heterogeneity and implications for intestinal regeneration and inflammatory intestinal pathologies.
Collapse
|
44
|
Smith M, Chhabra S, Shukla R, Kenny S, Almond S, Edgar D, Wilm B. The transition zone in Hirschsprung's bowel contains abnormal hybrid ganglia with characteristics of extrinsic nerves. J Cell Mol Med 2023; 27:287-298. [PMID: 36606638 PMCID: PMC9843525 DOI: 10.1111/jcmm.17659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 11/24/2022] [Accepted: 11/30/2022] [Indexed: 01/07/2023] Open
Abstract
The aganglionic bowel in short-segment Hirschsprung's disease is characterized both by the absence of enteric ganglia and the presence of extrinsic thickened nerve bundles (TNBs). The relationship between the TNBs and the loss of enteric ganglia is unknown. Previous studies have described decreasing numbers of ganglia with increasing density of TNBs within the transition zone (TZ) between ganglionic and aganglionic gut, and there is some evidence of spatial contact between them in this region. To determine the cellular interactions involved, we have analysed the expression of perineurial markers of TNBs and enteric ganglionic markers for both neural cells and their ensheathing telocytes across four cranio-caudal segments consisting of most proximal ganglionic to most distal aganglionic from pull-through resected colon. We show that in the TZ, enteric ganglia are abnormal, being surrounded by perineurium cells characteristic of TNBs. Furthermore, short processes of ganglionic neurons extend caudally towards the aganglionic region, where telocytes in the TNB are located between the perineurium and nerve fibres into which they project telopodes. Thus, enteric ganglia within the TZ have abnormal structural characteristics, the cellular relationships of which are shared by the TNBs. These findings will help towards elucidation of the cellular mechanisms involved in the aetiology of Hirschsprung's disease.
Collapse
Affiliation(s)
- Megan Smith
- Institute of Systems, Molecular and Integrative BiologyUniversity of LiverpoolLiverpoolMerseysideUK
| | - Sumita Chhabra
- Institute of Systems, Molecular and Integrative BiologyUniversity of LiverpoolLiverpoolMerseysideUK,Department of Paediatric SurgeryAlder Hey Children's HospitalLiverpoolMerseysideUK
| | - Rajeev Shukla
- Department of HistopathologyAlder Hey Children's HospitalLiverpoolMerseysideUK
| | - Simon Kenny
- Department of Paediatric SurgeryAlder Hey Children's HospitalLiverpoolMerseysideUK
| | - Sarah Almond
- Department of Paediatric SurgeryAlder Hey Children's HospitalLiverpoolMerseysideUK
| | - David Edgar
- Institute of Systems, Molecular and Integrative BiologyUniversity of LiverpoolLiverpoolMerseysideUK
| | - Bettina Wilm
- Institute of Systems, Molecular and Integrative BiologyUniversity of LiverpoolLiverpoolMerseysideUK
| |
Collapse
|
45
|
Hussein MM, Sayed RKA, Mokhtar DM. Structural and immunohistochemical analysis of the cellular compositions of the liver of molly fish (Poecilia sphenops), focusing on its immune role. ZOOLOGICAL LETTERS 2023; 9:1. [PMID: 36604695 PMCID: PMC9814241 DOI: 10.1186/s40851-022-00200-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Accepted: 11/21/2022] [Indexed: 06/17/2023]
Abstract
The liver of fish is considered an ideal model for studying the collaboration between environmental agents and the health state of the fish, where it gives good indications about aquatic ecosystem status. Therefore, this study presented immune roles for the liver in molly fish (Poecilia sphenops), using immunohistochemistry and transmission electron microscopy (TEM). The hepatocytes' sinusoidal structures of molly fish livers had taken two different forms; cord-like and tubular, while the biliary tract system showed two different types: isolated and biliary venous tract. The TEM showed that the hepatocytes possessed well-developed cytoplasmic organelles and numerous glycogen and lipid droplets of different sizes. Kupffer cells, Ito cells, aggregation of intrahepatic macrophages and melanomacrophages were also recognized. Melanomacrophages contained numerous phagosomes, many lysosomes, cytoplasmic vacuoles, and melanin pigments. Hepatocytes and Kupffer cells expressed immunoreactivity to APG5, indicating that these cells were involved in the process of autophagy. Telocytes (TCs) were also recognized in the liver of molly fish, and they shared the same morphological characteristics as those in mammals. However, TCs expressed strong immunoreactivity to APG5, TGF-β, and Nrf2, suggesting their possible role in cellular differentiation and regeneration, in addition to phagocytosis and autophagy. Both IL-1β and NF-KB showed immunoreactivity in the hepatocytes and in inflammatory cells (including intrahepatic macrophages and melanomacrophage center). Nrf2 and SOX9 showed immunoreactivity in hepatocytes, stem cells, and macrophages. The present study showed the spatial distribution of hepatic vascular-biliary tracts in molly fish. The liver of molly fish has unique functions in phagocytosis, autophagy, and cell regeneration. The expression of APG5 in hepatocytes, Kupffer cells, melanomacrophages, and telocytes supports the role of the liver in lymphocyte development and proliferation. The expression of TGF-β and NF-κB in hepatocytes, Kupffer cells, telocytes, and macrophages suggests the role of the liver in regulation of cell proliferation and immune response suppression. The expression of IL-1β and Sox9 in macrophages and melanomacrophages suggests the role of the liver in regulation of both innate and adaptive immunity, cell proliferation and apoptosis, in addition to stem cell maintenance.
Collapse
Affiliation(s)
- Marwa M Hussein
- Department of Cell and Tissues, Faculty of Veterinary Medicine, Assiut University, Assiut, 71526, Egypt
| | - Ramy K A Sayed
- Department of Anatomy and Embryology, Faculty of Veterinary Medicine, Sohag University, 82524, Sohag, Egypt.
| | - Doaa M Mokhtar
- Department of Cell and Tissues, Faculty of Veterinary Medicine, Assiut University, Assiut, 71526, Egypt
- Department of Histology and Anatomy, Faculty of Veterinary Medicine, Badr University in Assiut, Assiut, Egypt
| |
Collapse
|
46
|
Xu T, Zhang H, Zhu Z. Telocytes and endometriosis. Arch Gynecol Obstet 2023; 307:39-49. [PMID: 35668319 DOI: 10.1007/s00404-022-06634-w] [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: 02/27/2022] [Accepted: 05/14/2022] [Indexed: 02/02/2023]
Abstract
Endometriosis involving the presence and growth of glands and stroma outside the uterine cavity is a common, inflammatory, benign gynecologic disease. Nevertheless, no single theory can exactly account for the pathogenesis of endometriosis. Telocytes, a kind of novel mesenchymal cells, have been suggested to be crucial in promoting angiogenesis and increasing the activity of endometrial interstitial cells and inflammatory cells. Given above roles, telocytes may be considered as the possible pathogenesis of endometriosis. We reviewed the current literature on telocytes. The following aspects were considered: (A) the telocytes' typical characteristics, function, and morphological changes in endometriosis; (B) the potential role of telocytes in endometriosis by impacting the inflammation, invasion, and angiogenesis; (C) telocytes as the potential treatment options for endometriosis.
Collapse
Affiliation(s)
- Ting Xu
- Department of Gynecology, Obstetrics and Gynecology Hospital, Fudan University, No.128, Shenyang Road, Shanghai, 200090, China
| | - Hongqi Zhang
- Department of Anatomy, Histology and Embryology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
| | - Zhiling Zhu
- Department of Gynecology, Obstetrics and Gynecology Hospital, Fudan University, No.128, Shenyang Road, Shanghai, 200090, China.
| |
Collapse
|
47
|
Quaye Mensah B. Ligamentum arteriosum and its telocytes: An ultrastructure description. Anat Rec (Hoboken) 2023; 306:187-192. [PMID: 35904054 DOI: 10.1002/ar.25052] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 07/20/2022] [Accepted: 07/20/2022] [Indexed: 01/29/2023]
Abstract
Results from my study have shown in 2022 the existence of telocytes (TCs) in mice ligamentum arteriosum (LA). Telocytes (TCs) are unique interstitial or stromal cells of mesodermal origin, defined by long cellular extensions called telopodes (Tps) which form a network, connecting them to surrounding cells. These Tps have dilated portions named podoms (usually containing mitochondria, endoplasmic reticulum and caveolae) and very thin segments (below resolving power of light microscopy), called podomers. Generally, transmission electron microscope revealed the existence of Tps with various conformations: (a) long, flattened irregular veils (ribbon-like segments) with knobs, corresponding to podoms, and (b) tubular structures (podomers) with uneven caliber because of irregular dilations (knobs)-the podoms. Also shown were numerous extracellular vesicles and exosomes released by the TCs which sometimes made direct contact with telopodes. Telopodes were observed communicating with each other through adherens junctions. Telopodes sandwiched between myocytes or in close proximity (0.01 μm) from nerve terminals were also observed. These data might be useful for understanding the role(s) of TCs in intercellular signaling and communication, neuromodulation as well as comprehension of pathologies like structural remodeling within the LA.
Collapse
|
48
|
Telocytes and Other Interstitial Cells 2.0: From Structure to Function. Int J Mol Sci 2022; 23:ijms232416221. [PMID: 36555860 PMCID: PMC9785785 DOI: 10.3390/ijms232416221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 12/04/2022] [Indexed: 12/23/2022] Open
Abstract
Interstitial cells are often seen as those cells that fill the space between parenchymal cells, responsible for fulfilling the function of an organ [...].
Collapse
|
49
|
Dermal Telocytes: A Different Viewpoint of Skin Repairing and Regeneration. Cells 2022; 11:cells11233903. [PMID: 36497161 PMCID: PMC9736852 DOI: 10.3390/cells11233903] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 11/14/2022] [Accepted: 11/23/2022] [Indexed: 12/11/2022] Open
Abstract
Fifteen years after their discovery, telocytes (TCs) are yet perceived as a new stromal cell type. Their presence was initially documented peri-digestively, and gradually throughout the interstitia of many (non-)cavitary mammalian, human, and avian organs, including skin. Each time, TCs proved to be involved in diverse spatial relations with elements of interstitial (ultra)structure (blood vessels, nerves, immune cells, etc.). To date, transmission electron microscopy (TEM) remained the single main microscopic technique able to correctly and certainly attest TCs by their well-acknowledged (ultra)structure. In skin, dermal TCs reiterate almost all (ultra)structural features ascribed to TCs in other locations, with apparent direct implications in skin physiology and/or pathology. TCs' uneven distribution within skin, mainly located in stem cell niches, suggests involvement in either skin homeostasis or dermatological pathologies. On the other hand, different skin diseases involve different patterns of disruption of TCs' structure and ultrastructure. TCs' cellular cooperation with other interstitial elements, their immunological profile, and their changes during remission of diseases suggest their role(s) in tissue regeneration/repair processes. Thus, expanding the knowledge on dermal TCs could offer new insights into the natural skin capacity of self-repairing. Moreover, it would become attractive to consider that augmenting dermal TCs' presence/density could become an attractive therapeutic alternative for treating various skin defects.
Collapse
|
50
|
Meng X, Ding B, Zhu Z, Ma Q, Wang Q, Feng Y, Liu Y, Wang J, Yang P. Evaluation of the Plasticity of Novel Regulatory Cells-Telocytes-in the Gonad of the Male Chinese Soft-Shelled Turtle ( Pelodiscus sinensis) Associated with Seasonal Reproductive Activity. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2022; 28:1-9. [PMID: 36204971 DOI: 10.1017/s1431927622012302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Telocyte (TC)—a new type of interstitial cell with long telopodes, can form cellular junctions with various tissues or cells to participate in the regulation of multitudes of physiological activities and diseases. This study aimed to characterize the morphology, molecular features, and potential functions of hormone regulation in Chinese soft-shelled turtle (Pelodiscus sinensis) testis TCs at different reproductive stages by histological evaluation, immunohistochemistry (IHC), immunofluorescence (IF), and transmission electron microscopy. During hibernation, TCs were widely distributed in the interstitial tissue. In contrast, during reproductive activity, TCs were noted to be in close proximity with peritubular myoid cells surrounding the seminiferous tubule. Moreover, formed cell–cell junctions were observed between TCs and PTMs. The results of IHC and IF showed that the immunophenotype of testicular TCs in hibernating Chinese soft-shelled turtles is CD34+Vimentin−, while the reproductive telopodes (Tps) show low expression of vimentin. The androgen receptor is expressed in Tps of TCs of testis during hibernation. Our results showed also that TCs in seasonal breeding animals regulate the activity of neighboring cells by releasing extracellular microvesicles (EXMVs), thus influencing the activity of spermatogenesis and steroidogenesis. Consideration of our novel and interesting results indicate that the whole area warrants further research.
Collapse
Affiliation(s)
- Xiangfei Meng
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Baitao Ding
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhaoxuan Zhu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Qianhui Ma
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Qi Wang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Yongchao Feng
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Yue Liu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Jia Wang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Ping Yang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| |
Collapse
|