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Cui X, Zhang C, Wang F, Zhao X, Wang S, Liu J, He D, Wang C, Yang FC, Tong S, Liang Y. Latexin regulates sex dimorphism in hematopoiesis via gender-specific differential expression of microRNA 98-3p and thrombospondin 1. Cell Rep 2023; 42:112274. [PMID: 36933218 PMCID: PMC10160986 DOI: 10.1016/j.celrep.2023.112274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 01/31/2023] [Accepted: 03/02/2023] [Indexed: 03/18/2023] Open
Abstract
Hematopoietic stem cells (HSCs) have the ability to self-renew and differentiate to all blood cell types. HSCs and their differentiated progeny show sex/gender differences. The fundamental mechanisms remain largely unexplored. We previously reported that latexin (Lxn) deletion increased HSC survival and repopulation capacity in female mice. Here, we find no differences in HSC function and hematopoiesis in Lxn knockout (Lxn-/-) male mice under physiologic and myelosuppressive conditions. We further find that Thbs1, a downstream target gene of Lxn in female HSCs, is repressed in male HSCs. Male-specific high expression of microRNA 98-3p (miR98-3p) contributes to Thbs1 suppression in male HSCs, thus abrogating the functional effect of Lxn in male HSCs and hematopoiesis. These findings uncover a regulatory mechanism involving a sex-chromosome-related microRNA and its differential control of Lxn-Thbs1 signaling in hematopoiesis and shed light on the process underlying sex dimorphism in both normal and malignant hematopoiesis.
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Affiliation(s)
- Xiaojing Cui
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY 40536 USA
| | - Cuiping Zhang
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY 40536 USA
| | - Fang Wang
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY 40536 USA
| | - Xinghui Zhao
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY 40536 USA
| | - Shuxia Wang
- Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, KY 40536 USA
| | - Jinpeng Liu
- Division of Cancer Biostatistics, Department of Internal Medicine, University of Kentucky, Lexington, KY 40536 USA
| | - Daheng He
- Division of Cancer Biostatistics, Department of Internal Medicine, University of Kentucky, Lexington, KY 40536 USA
| | - Chi Wang
- Division of Cancer Biostatistics, Department of Internal Medicine, University of Kentucky, Lexington, KY 40536 USA
| | - Feng-Chun Yang
- Department of Cell Systems & Anatomy, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA; Mays Cancer Center, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Sheng Tong
- Department of Bioengineering, University of Kentucky, Lexington, KY 40536, USA
| | - Ying Liang
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY 40536 USA.
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Morello T, Kollmar R, Stewart M, Orman R. The retrosplenial cortex of Carollia perspicillata, Seba's short-tailed fruit bat. Hippocampus 2022; 32:752-764. [PMID: 36018284 DOI: 10.1002/hipo.23464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 08/01/2022] [Accepted: 08/08/2022] [Indexed: 11/11/2022]
Abstract
Retrosplenial cortex (RSC) is a brain region involved in critical cognitive functions including memory, planning, and spatial navigation and is commonly affected in neurodegenerative diseases. Subregions of RSC are typically described as Brodmann areas 29 and 30, which are defined by cytoarchitectural features. Using immunofluorescence, we studied the distributions of neurons immunoreactive for NeuN, latexin, and calcium binding proteins (calbindin, calretinin, and parvalbumin) in RSC of Carollia perspicillata, Seba's short-tailed fruit bat. We observed that latexin was specifically present in areas 29a and 29b but not 29c and 30. We further identified distribution patterns of calcium binding proteins that group areas 29a and 29b separately from areas 29c and 30. We conclude first that latexin is a useful marker to classify subregions of RSC and second that these subregions contain distinct patterns of neuronal immunoreactivity for calcium binding proteins. Given the long lifespan of Carollia, bat RSC may be a useful model in studying age-related neurodegeneration.
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Affiliation(s)
- Timothy Morello
- Department of Physiology & Pharmacology, SUNY Downstate Health Sciences University, Brooklyn, New York, USA
| | - Richard Kollmar
- Department of Cell Biology, SUNY Downstate Health Sciences University, Brooklyn, New York, USA.,Department of Otolaryngology, SUNY Downstate Health Sciences University, Brooklyn, New York, USA
| | - Mark Stewart
- Department of Physiology & Pharmacology, SUNY Downstate Health Sciences University, Brooklyn, New York, USA.,Department of Neurology, SUNY Downstate Health Sciences University, Brooklyn, New York, USA
| | - Rena Orman
- Department of Physiology & Pharmacology, SUNY Downstate Health Sciences University, Brooklyn, New York, USA
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Liu Y, Zhang C, Li Z, Wang C, Jia J, Gao T, Hildebrandt G, Zhou D, Bondada S, Ji P, St Clair D, Liu J, Zhan C, Geiger H, Wang S, Liang Y. Latexin Inactivation Enhances Survival and Long-Term Engraftment of Hematopoietic Stem Cells and Expands the Entire Hematopoietic System in Mice. Stem Cell Reports 2017; 8:991-1004. [PMID: 28330618 PMCID: PMC5390104 DOI: 10.1016/j.stemcr.2017.02.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Revised: 02/09/2017] [Accepted: 02/10/2017] [Indexed: 12/20/2022] Open
Abstract
Natural genetic diversity offers an important yet largely untapped resource to decipher the molecular mechanisms regulating hematopoietic stem cell (HSC) function. Latexin (Lxn) is a negative stem cell regulatory gene identified on the basis of genetic diversity. By using an Lxn knockout mouse model, we found that Lxn inactivation in vivo led to the physiological expansion of the entire hematopoietic hierarchy. Loss of Lxn enhanced the competitive repopulation capacity and survival of HSCs in a cell-intrinsic manner. Gene profiling of Lxn-null HSCs showed altered expression of genes enriched in cell-matrix and cell-cell interactions. Thrombospondin 1 (Thbs1) was a potential downstream target with a dramatic downregulation in Lxn-null HSCs. Enforced expression of Thbs1 restored the Lxn inactivation-mediated HSC phenotypes. This study reveals that Lxn plays an important role in the maintenance of homeostatic hematopoiesis, and it may lead to development of safe and effective approaches to manipulate HSCs for clinical benefit.
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Affiliation(s)
- Yi Liu
- Department of Physiology, University of Kentucky, Lexington, KY 40536, USA
| | - Cuiping Zhang
- Department of Toxicology and Cancer Biology, University of Kentucky, Health Sciences Research Building Room 340, 1095 V.A. Drive, Lexington, KY 40536, USA
| | - Zhenyu Li
- Department of Internal Medicine, University of Kentucky, Lexington, KY 40536, USA
| | - Chi Wang
- Department of Cancer Biostatistics, University of Kentucky, Lexington, KY 40536, USA
| | - Jianhang Jia
- Department of Molecular & Cellular Biochemistry, University of Kentucky, Lexington, KY 40536, USA
| | - Tianyan Gao
- Department of Molecular & Cellular Biochemistry, University of Kentucky, Lexington, KY 40536, USA
| | - Gerhard Hildebrandt
- Department of Internal Medicine, University of Kentucky, Lexington, KY 40536, USA
| | - Daohong Zhou
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Subbarao Bondada
- Department of Microbiology, Immunology and Molecular Genetics, University of Kentucky, Lexington, KY 40536, USA
| | - Peng Ji
- Department of Pathology, Northwestern University, Chicago, IL 60611, USA
| | - Daret St Clair
- Department of Toxicology and Cancer Biology, University of Kentucky, Health Sciences Research Building Room 340, 1095 V.A. Drive, Lexington, KY 40536, USA
| | - Jinze Liu
- Department of Computer Science, University of Kentucky, Lexington, KY 40536, USA
| | - Changguo Zhan
- Department of Pharmaceutical Sciences, University of Kentucky, Lexington, KY 40536, USA
| | - Hartmut Geiger
- Cincinnati Children's Hospital Medical Center, Experimental Hematology and Cancer Biology, Cincinnati, OH 45229, USA; Institute for Molecular Medicine, University of Ulm, 89081 Ulm, Germany
| | - Shuxia Wang
- Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, KY 40536, USA
| | - Ying Liang
- Department of Toxicology and Cancer Biology, University of Kentucky, Health Sciences Research Building Room 340, 1095 V.A. Drive, Lexington, KY 40536, USA.
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