ArticleImmunity, inflammation and disease2018
Transcriptional and translational-uncoupling in regulation of the CXCL12 and its receptors CXCR4, 7 in THP-1 monocytes and macrophages.
Article in Immunity, inflammation and disease, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed, 10 citations in OpenAlex.
- Vagus nerve stimulation-induced stromal cell-derived factor-l alpha participates in angiogenesis and repair of infarcted hearts.ESC heart failure · 2023Article
- Role and implications of the CXCL12/CXCR4/CXCR7 axis in atherosclerosis: still a debate.Annals of medicine · 2021Review
- The increased intrathecal expression of the monocyte-attracting chemokines CCL7 and CXCL12 in tick-borne encephalitis.Journal of neurovirology · 2021Article
- Obesity-Induced Peritoneal Dissemination of Ovarian Cancer and Dominant Recruitment of Macrophages in Ascites.Immune network · 2018Article
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Authors and funding
4 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
introductionThe chemokine CXCL12 and its receptors CXCR4 and 7 play crucial roles in the immune system. In the present study, regulation of this pathway was further examined using the in-vitro model of undifferentiated human THP-1 monocytes (u-THP-1) and phorbol 12-myristate 13-acetate (PMA)-differentiated THP-1 macrophages (d-THP-1), to assess the effects of differentiation and the TLR4 ligand lipopolysaccharide (LPS) on the pathway. METHODS/
resultsDifferentiation did not affect the CXCR4, 7 mRNA levels. Interestingly, the CXCL12 and CXCR7 proteins but not CXCR4 were found to be up-regulated during differentiation. LPS, through CD14-dependent pathway, induced CXCL12 and CXCR4, 7 mRNA levels to a greater magnitude in d- than u-THP-1. The induction effect on CXCL12 stimulated by LPS was confirmed using ELISA. Increased migration of u-THP-1 was observed using conditioned medium from LPS-treated d-THP-1. Additionally, d-THP-1, although expressed higher CXCR7 protein levels, failed to migrate toward CXCL12. In contrast, LPS did not affect CXCR4, 7 protein levels.
conclusionHence, this study indicated that CXCL12, CXCR4, and CXCR7 were differentially expressed and regulated in u-THP-1 and d-THP-1 cells in response to external stimuli. Importantly, we reported here a novel observation that uncoupling exists between transcriptional and translational regulation of CXCR4, 7 expressions by differentiation and TLR stimuli.
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