Stem cells and development最新文献

{"title":"Defined Conditions Control the Morphological Dualism of Rat Primitive Extraembryonic Endoderm Stem Cells.","authors":"Xiaoqiong Wang, Minjae Kim, Kyoung Hwa Jung, Young Gyu Chai, Bert Binas","doi":"10.1089/scd.2023.0187","DOIUrl":"10.1089/scd.2023.0187","url":null,"abstract":"<p><p>Rat primitive extraembryonic endoderm (pXEN) stem cell lines indefinitely preserve the characteristic features of the early extraembryonic endoderm (ExEn) in vitro, but require unknown serum factors and exhibit a hybrid (mesenchymal-epithelial) phenotype. We report two chemically defined conditions that differ by the addition of the cytokine leukemia inhibitory factor (Lif) and the β-catenin-stabilizing drug Chir99021, and enable permanent self-renewal as mesenchymal and epithelial morphotypes, respectively. The morphotypes are interconvertible and equipotent, as shown by the formation of well-differentiated organoids. Surprisingly, the proliferation of both morphotypes requires Lif-type Gp130/Stat3 signaling (autocrine in the absence of added Lif) and noncanonical Wnt signaling (autocrine). In addition, the epithelial version requires β-catenin for proliferation and morphology. Interestingly, the mesenchymal cells also express key epithelial markers, but those are improperly structured and/or not functional, indicating a primed state. These results provide an improved platform for studying the proliferation and plasticity of the early ExEn, which occurs in mesenchymal and epithelial forms in vivo.</p>","PeriodicalId":94214,"journal":{"name":"Stem cells and development","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41224459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Induced Pluripotent Stem-Derived Parathyroid Cells: An Opportunity for Human Parathyroid Disorders","authors":"Sabrina Corbetta","doi":"10.1089/scd.2023.29015.editorial","DOIUrl":"https://doi.org/10.1089/scd.2023.29015.editorial","url":null,"abstract":"Stem Cells and DevelopmentVol. 32, No. 21-22 Guest EditorialFree AccessInduced Pluripotent Stem-Derived Parathyroid Cells: An Opportunity for Human Parathyroid DisordersSabrina CorbettaSabrina CorbettaAddress correspondence to: Sabrina Corbetta, MD, PhD, Bone Metabolism Disorders and Diabetes Unit, IRCCS Istituto Auxologico Italiano, Via L. Ariosto, Milan 20145, Italy E-mail Address: [email protected]https://orcid.org/0000-0001-8140-3175Bone Metabolism Disorders and Diabetes Unit, IRCCS Istituto Auxologico Italiano, Milan, Italy.Department of Biomedical, Surgical and Dentistry Sciences, University of Milan, Milan, Italy.Search for more papers by this authorPublished Online:3 Nov 2023https://doi.org/10.1089/scd.2023.29015.editorialAboutSectionsPDF/EPUB Permissions & CitationsPermissionsDownload CitationsTrack CitationsAdd to favorites Back To Publication ShareShare onFacebookTwitterLinked InRedditEmail Parathyroid glands are involved in calcium-phosphate homeostasis. Hydroxyapatite crystals formed by calcium and phosphate are the main inorganic constituents of skeletal bone matrix. Calcium is needed for neuromuscular excitability, muscle contraction, and coagulation, while phosphate is fundamental for the energetic molecule adenosine triphosphate.Parathyroid cells sense extracellular calcium concentrations and release parathormone (PTH), which exerts a hypercalcemic effect by acting on bone and kidney. PTH-induced bone matrix resorption increases circulating calcium and phosphate levels. PTH induces calcium reabsorption from ultrafiltrate urine and phosphate renal waist; its secretion was induced by hyperphosphatemia, to avoid calcium-phosphate precipitation in soft tissues [1]. The specific calcium-sensing activity of the parathyroid cells is mediated by the molecular structure of the calcium-sensing receptor (CASR), a G-protein coupled seven transmembrane domains receptor [2].Parathyroid cells origin from the endoderm cells during the embryonic development interacting with mesenchymal cells as demonstrated by studies in mice knockout for TBX1 gene [3]. The expression of the parathyroid master regulatory gene GCM2 in cells of the third and fourth pharyngeal pouches during embryogenesis drives differentiation toward parathyroid cells [3]. GCM2 may play a role for parathyroid cell proliferation and maintenance also in adulthood [4], sustaining the expression of CASR and PTH genes.Parathyroid diseases are characterized by circulating calcium and phosphate deregulation due to alterations of the calcium sensitivity and/or of PTH release. Clinical parathyroid diseases are characterized by conditions of hypoparathyroidism associated with hypocalcemia and hyperparathyroidism associated with hypercalcemia.Hypoparathyroidism is due to loss of parathyroid functional cells, most frequently consistent in life-long condition of postsurgical hypoparathyroidism (secondary to thyroid, parathyroid, larynx, cervical lymphonodal dissection) and post-conventional irr","PeriodicalId":94214,"journal":{"name":"Stem cells and development","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135564425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"<i>Correction to:</i> Keratinocytes Derived from Patient-Specific Induced Pluripotent Stem Cells Recapitulate the Genetic Signature of Psoriasis Disease by Ali, et al. Stem Cells Dev 2020;29(7):383-400; doi: 10.1089/scd.2019.0150.","authors":"","doi":"10.1089/scd.2019.0150.correx","DOIUrl":"https://doi.org/10.1089/scd.2019.0150.correx","url":null,"abstract":"","PeriodicalId":94214,"journal":{"name":"Stem cells and development","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49686937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inducing Heat Shock Proteins Enhances the Stemness of Frozen-Thawed Adipose Tissue-Derived Stem Cells.","authors":"Shahensha Shaik, Daniel Hayes, Jeffrey Gimble, Ram Devireddy","doi":"10.1089/scd.2016.0289","DOIUrl":"https://doi.org/10.1089/scd.2016.0289","url":null,"abstract":"<p><p>Extensive research has been performed to determine the effect of freezing protocol and cryopreservation agents on the viability of adipose tissue-derived stromal/stem cells (ASCs) as well as other cells. Unfortunately, the conclusion one may draw after decades of research utilizing fundamentally similar cryopreservation techniques is that a barrier exists, which precludes full recovery. We hypothesize that agents capable of inducing a subset of heat shock proteins (HSPs) and chaperones will reduce the intrinsic barriers to the post-thaw recovery of ASCs. ASCs were exposed to 43°C for 1 h to upregulate HSPs, and the temporal HSP expression profile postheat shock was determined by performing quantitative polymerase chain reaction (PCR) and western blotting assays. The expression levels of HSP70 and HSP32 were found to be maximum at 3 h after the heat shock, whereas HSP90 and HSP27 remain unchanged. The heat shocked ASCs cryopreserved during maximal HSPs expression exhibited increased post-thaw viability than the nonheat shocked samples. Histochemical staining and quantitative reverse transcription-PCR indicated that the ASC differentiation potential was retained. Thus, suggesting that the upregulation of HSPs before a freezing insult is beneficial to ASCs and a potential alternative to the use of harmful cryoprotective agents.</p>","PeriodicalId":94214,"journal":{"name":"Stem cells and development","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5393415/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140208752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}