Growth hormone in the presence of laminin modulates interaction of human thymic epithelial cells and thymocytes in vitro
Open accessAbstract
BACKGROUND: Several evidences indicate that hormones and neuropeptides function as immunomodulators. Among these, growth hormone (GH) is known to act on the thymic microenvironment, supporting its role in thymocyte differentiation. The aim of this study was to evaluate the effect of GH on human thymocytes and thymic epithelial cells (TEC) in the presence of laminin. RESULTS: GH increased thymocyte adhesion on BSA-coated and further on laminin-coated surfaces. The number of migrating cells in laminin-coated membrane was higher in GH-treated thymocyte group. In both results, VLA-6 expression on thymocytes was constant. Also, treatment with GH enhanced laminin production by TEC after 24 h in culture. However, VLA-6 integrin expression on TEC remained unchanged. Finally, TEC/thymocyte co-culture model demonstrated that GH elevated absolute number of double-negative (CD4(-)CD8(-)) and single-positive CD4(+) and CD8(+) thymocytes. A decrease in cell number was noted in double-positive (CD4(+)CD8(+)) thymocytes. CONCLUSIONS: The results of this study demonstrate that GH is capable of enhancing the migratory capacity of human thymocytes in the presence of laminin and promotes modulation of thymocyte subsets after co-culture with TEC.
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Of the primary articles on thymic cell lines, 43 were published after the report by MacLeod et al. and the most recent one was published only in late 2016.
“Of the primary articles, 43 were published after the report by MacLeod et al. and the most recent one was published only in late 2016 [41].”
From The ghosts of HeLa: How cell line misidentification contaminates the scientific literature (2017) · cites this paper as [41]
The Methods section (page unavailable) confirms that this is a primary study using a human thymic epithelial cell line, so it fits the kind of article cited. Our copy does not establish that it was published in late 2016 or that it was the most recent such article. The count of 43 appears to be the citing authors’ own tally, not a claim made by this source. (LLM, conf=0.78)
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The ghosts of HeLa: How cell line misidentification contaminates the scientific literature
Horbach, S. P. J. M., & Halffman, W. (2017) · PLOS ONE · doi:10.1371/journal.pone.0186281 · Cited by 167 · see citing works
- Authors
- Lins, M. P., de Araújo Vieira, L. F., Rosa, A. A. M., & Smaniotto, S.
- Affiliations
- Universidade Federal de Alagoas (BR)
- Corresponding author
- Smaniotto, Salete
- Venue
- Biological Research
- Published
- 2016-09-02
- Volume
- 49
- Issue
- 1
- Pages
- 37-37
- ISSN
- 0716-9760 (ISSN-L)
- 0717-6287
- PMC
- PMC5010746
- OpenAlex
- W2508682195
- Cited by
- 15
- References
- 2
- Citations by year
- 2025: 2 · 2023: 2 · 2022: 4 · 2020: 2 · 2019: 1 · 2018: 3 · 2017: 1
- FWCI
- 1.01
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- cc-by
- Locations
- Biological Research (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (publishedVersion, other-oa)
- Americanae (AECID Library) (submittedVersion, other-oa)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
- Topics
- Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
- Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Growth Hormone and Insulin-like Growth Factors
- Health Sciences › Medicine › Immunology and Allergy › Cell Adhesion Molecules Research
- Keywords
- growth hormone, laminin, thymic epithelial cells, thymocytes, thymocyte adhesion, thymocyte migration, thymic microenvironment, thymocyte differentiation, thymocyte subsets, immunomodulation
- MeSH terms
- Analysis of Variance, Cell Adhesion, Cell Differentiation, Cell Movement, Cells, Cultured, Child, Child, Preschool, Epithelial Cells, Flow Cytometry, Humans, Immunohistochemistry, Infant, Infant, Newborn, Laminin, Reference Values, Growth Hormone, Thymus Gland, Time Factors, CD4-Positive T-Lymphocytes, CD8-Positive T-Lymphocytes, Coculture Techniques, Integrin alpha6beta1, Thymocytes
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