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Zhu X, Xu M, Portal C, Lin Y, Ferdinand A, Peng T, Morrisey EE, Dlugosz AA, Castellano JM, Lee V, Seykora JT, Iomini C, Millar SE. Identification of Meibomian gland stem cell populations and mechanisms of aging. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.08.09.607015. [PMID: 39149265 PMCID: PMC11326261 DOI: 10.1101/2024.08.09.607015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 08/17/2024]
Abstract
Meibomian glands secrete lipid-rich meibum, which prevents tear evaporation. Aging-related Meibomian gland shrinkage may result in part from stem cell exhaustion and is associated with evaporative dry eye disease, a common condition lacking effective treatment. The identities and niche of Meibomian gland stem cells and the signals controlling their activity are poorly defined. Using snRNA-seq, in vivo lineage tracing, ex vivo live imaging, and genetic studies in mice, we identified markers for stem cell populations that maintain distinct regions of the gland and uncovered Hh signaling as a key regulator of stem cell proliferation. Consistent with this, human Meibomian gland carcinoma exhibited increased Hh signaling. Aged glands displayed decreased Hh and EGF signaling, deficient innervation, and loss of collagen I in niche fibroblasts, indicating that alterations in both glandular epithelial cells and their surrounding microenvironment contribute to age-related degeneration. These findings suggest new approaches to treat aging-associated Meibomian gland loss.
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Affiliation(s)
- Xuming Zhu
- Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Institute for Regenerative Medicine, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Department of Cell, Developmental and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Mingang Xu
- Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Institute for Regenerative Medicine, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Department of Cell, Developmental and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Celine Portal
- Department of Ophthalmology, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, 21231, USA
- Department of Cell Biology, Johns Hopkins University School of Medicine, Baltimore, MD, 21231, USA
| | - Yvonne Lin
- Department of Ophthalmology, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, 21231, USA
- Department of Cell Biology, Johns Hopkins University School of Medicine, Baltimore, MD, 21231, USA
| | - Alyssa Ferdinand
- Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Institute for Regenerative Medicine, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Department of Cell, Developmental and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Tien Peng
- Department of Medicine, University of California San Francisco, San Francisco, CA 94143, USA
| | - Edward E. Morrisey
- Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Andrzej A. Dlugosz
- Department of Dermatology and the Rogel Cancer Center, University of Michigan Medical School, Ann Arbor, MI 48109, USA
- Department of Cell and Developmental Biology, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Joseph M. Castellano
- Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Institute for Regenerative Medicine, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Nash Family Department of Neuroscience, Department of Neurology, Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Ronald M. Loeb Center for Alzheimer’s Disease, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Vivian Lee
- Department of Ophthalmology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA
- Department of Dermatology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA
| | - John T. Seykora
- Department of Dermatology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Carlo Iomini
- Department of Ophthalmology, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD, 21231, USA
- Department of Cell Biology, Johns Hopkins University School of Medicine, Baltimore, MD, 21231, USA
| | - Sarah E Millar
- Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Institute for Regenerative Medicine, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Department of Cell, Developmental and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
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Ding SC, Su JJ, Zhan Q, Wang JM, Zheng F, Fang XX, Cheng D, Guo P. Factors affecting meibomian gland area loss in symptomatic adults. Int J Ophthalmol 2024; 17:1036-1041. [PMID: 38895686 PMCID: PMC11144782 DOI: 10.18240/ijo.2024.06.07] [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: 11/12/2023] [Accepted: 02/02/2024] [Indexed: 06/21/2024] Open
Abstract
AIM To characterize the distribution of meibomian gland (MG) area loss (MGL) and its relationship with demographic characteristics, mites, and symptoms. METHODS This retrospective observational study included patients who visited the Dry Eye Clinic of Shenzhen Eye Hospital between June 2020 and August 2021. General patient characteristics, ocular symptoms, Demodex test results of the eyelid edges, and the results of a comprehensive ocular surface analysis were collected. MGL was analyzed using Image J software. RESULTS This study enrolled 1204 outpatients aged 20-80 (40.70±13.44)y, including 357 males (29.65%) and 847 females (70.35%). The patients were classified into mild (n=155; 12.87%), moderate (n=795; 66.03%), severe (n=206; 17.11%), and extremely severe (n=48; 3.99%) MGL groups. MGL was significantly larger in female than in male (P=0.006). The degree of MGL also significantly differed in age (P<0.001) and the more numbers of mites with severity (P<0.001). Multivariate disordered multinomial logistic regression analysis identified that female sex, older age, secretory symptoms, and a large number of mites were risk factors for MGL (P<0.05). CONCLUSION Patients with MGL are more likely to be older, female, more numbers of mites, and increased secretion.
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Affiliation(s)
- Si-Cheng Ding
- The Second Clinical Medical College, Jinan University, Shenzhen 518000, Guangdong Province, China
| | - Jing-Jing Su
- Shenzhen Eye Hospital, Jinan University, Shenzhen Eye Institute, Shenzhen 518040, Guangdong Province, China
| | - Qing Zhan
- Shenzhen Eye Hospital, Jinan University, Shenzhen Eye Institute, Shenzhen 518040, Guangdong Province, China
| | - Jiao-Man Wang
- The Second Clinical Medical College, Jinan University, Shenzhen 518000, Guangdong Province, China
| | - Fang Zheng
- Department of Ophthalmology, Jinzhou Medical University, Jinzhou 121000, Liaoning Province, China
| | - Xu-Xuan Fang
- Shenzhen Eye Hospital, Jinan University, Shenzhen Eye Institute, Shenzhen 518040, Guangdong Province, China
| | - Dan Cheng
- Shenzhen Eye Hospital, Jinan University, Shenzhen Eye Institute, Shenzhen 518040, Guangdong Province, China
| | - Ping Guo
- The Second Clinical Medical College, Jinan University, Shenzhen 518000, Guangdong Province, China
- Shenzhen Eye Hospital, Jinan University, Shenzhen Eye Institute, Shenzhen 518040, Guangdong Province, China
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Pena-Verdeal H, Garcia-Queiruga J, Sabucedo-Villamarin B, Garcia-Resua C, Giraldez MJ, Yebra-Pimentel E. A Comprehensive Study on Tear Meniscus Height Inter-Eye Differences in Aqueous Deficient Dry Eye Diagnosis. J Clin Med 2024; 13:659. [PMID: 38337353 PMCID: PMC10856492 DOI: 10.3390/jcm13030659] [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: 12/27/2023] [Revised: 01/18/2024] [Accepted: 01/22/2024] [Indexed: 02/12/2024] Open
Abstract
(1) Background: Dry eye disease (DED) is a chronic ocular surface condition that requires precise diagnostic tools. The present study aimed to investigate the diagnostic potential of the absolute inter-eye difference (|OD-OS|) in tear meniscus height (TMH) for the detection of the presence of aqueous deficient dry eye (ADDE). (2) Methods: A sample of 260 participants with dry eye complaints underwent ocular surface examinations thorough diagnostic assessments based on the Tear Film and Ocular Surface Society guidelines (TFOS DEWS II). Participants were subsequently categorized as No ADDE and ADDE based on TMH. Statistical analyses to determine the optimal TMH|OD-OS| cut-off value in a randomly selected study group (200 participants) were performed, while a separate validation analysis of the cut-off value obtained in a random cross-validation group (60 participants) was also performed. (3) Results: The significant diagnostic capability of TMH|OD-OS| (area under the curve = 0.719 ± 0.036, p < 0.001) was found. The identified cut-off value of 0.033 mm demonstrated reliable specificity (77.6%) and moderate sensitivity (59.1%). Cross-validation confirmed the cut-off value's association with the TFOS DEWS II diagnostic criterion (Cramer's V = 0.354, p = 0.006). (4) Conclusions: The present study provides evidence for the diagnostic potential of TMH|OD-OS| in identifying ADDE. The identified cut-off value enhances the specificity and offers moderate sensitivity, providing an objective tool for clinical decision making.
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Affiliation(s)
- Hugo Pena-Verdeal
- GI-2092—Optometría, Departamento de Física Aplicada (Área de Optometría), Facultade de Óptica e Optometría, Universidade de Santiago de Compostela, Campus Vida S/N, 15705 Santiago de Compostela, Spain; (B.S.-V.); (C.G.-R.); (M.J.G.); (E.Y.-P.)
- Instituto de Investigación Sanitaria (IDIS), Travesía da Choupana S/N, 15706 Santiago de Compostela, Spain
| | - Jacobo Garcia-Queiruga
- GI-2092—Optometría, Departamento de Física Aplicada (Área de Optometría), Facultade de Óptica e Optometría, Universidade de Santiago de Compostela, Campus Vida S/N, 15705 Santiago de Compostela, Spain; (B.S.-V.); (C.G.-R.); (M.J.G.); (E.Y.-P.)
- Instituto de Investigación Sanitaria (IDIS), Travesía da Choupana S/N, 15706 Santiago de Compostela, Spain
| | - Belen Sabucedo-Villamarin
- GI-2092—Optometría, Departamento de Física Aplicada (Área de Optometría), Facultade de Óptica e Optometría, Universidade de Santiago de Compostela, Campus Vida S/N, 15705 Santiago de Compostela, Spain; (B.S.-V.); (C.G.-R.); (M.J.G.); (E.Y.-P.)
| | - Carlos Garcia-Resua
- GI-2092—Optometría, Departamento de Física Aplicada (Área de Optometría), Facultade de Óptica e Optometría, Universidade de Santiago de Compostela, Campus Vida S/N, 15705 Santiago de Compostela, Spain; (B.S.-V.); (C.G.-R.); (M.J.G.); (E.Y.-P.)
- Instituto de Investigación Sanitaria (IDIS), Travesía da Choupana S/N, 15706 Santiago de Compostela, Spain
| | - Maria J. Giraldez
- GI-2092—Optometría, Departamento de Física Aplicada (Área de Optometría), Facultade de Óptica e Optometría, Universidade de Santiago de Compostela, Campus Vida S/N, 15705 Santiago de Compostela, Spain; (B.S.-V.); (C.G.-R.); (M.J.G.); (E.Y.-P.)
- Instituto de Investigación Sanitaria (IDIS), Travesía da Choupana S/N, 15706 Santiago de Compostela, Spain
| | - Eva Yebra-Pimentel
- GI-2092—Optometría, Departamento de Física Aplicada (Área de Optometría), Facultade de Óptica e Optometría, Universidade de Santiago de Compostela, Campus Vida S/N, 15705 Santiago de Compostela, Spain; (B.S.-V.); (C.G.-R.); (M.J.G.); (E.Y.-P.)
- Instituto de Investigación Sanitaria (IDIS), Travesía da Choupana S/N, 15706 Santiago de Compostela, Spain
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