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Vieira RR, da Silva RA, Sasso GRS, Franco PC, Borges FT, Lima PDA, Sanches JM, Gil CD, Carbonel AAF. Lack of Annexin A1 Exacerbates Inflammatory Response in Acute Endometritis Model. Inflammation 2024; 47:1041-1052. [PMID: 38198110 DOI: 10.1007/s10753-023-01959-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 12/22/2023] [Accepted: 12/25/2023] [Indexed: 01/11/2024]
Abstract
Annexin A1 (AnxA1) is a glucocorticoid-inducible protein and an important endogenous modulator of inflammation. However, its effect in the endometrial microenvironment is poorly explained. This study aimed to evaluate the role of endogenous AnxA1 in an endometritis mouse model induced by lipopolysaccharide (LPS). Female C57BL/6 wild-type (WT) and AnxA1-/- mice were divided into two groups: SHAM and LPS. To induce endometritis, mice received a vaginal infusion of 50 μL of LPS (1 mg/mL) dissolved in phosphate-buffered saline. After 24 h, the mice were euthanized, and blood and uteri samples were collected. The endometrium inflammatory scores were significantly increased in the LPS-treated group. AnxA1-/- mice from the LPS group demonstrated a significant increase in the number of degranulated mast cell levels compared to AnxA1-/- SHAM mice. The Western blotting analysis revealed that a lack of AnxA1 promoted the upregulation of NLRP3 and pro-IL-1β in the acute endometritis animal model compared to WT LPS animals. LPS-induced endometritis increased the number of blood peripheral leukocytes in both WT and AnxA1-/- mice compared with SHAM group mice (p < 0.001). AnxA1-/- mice also showed increased plasma levels of IL-1β (p < 0.01), IL-6, IL-10, IL-17, and TNF-α (p < 0.05) following LPS-induced endometritis. In conclusion, a lack of endogenous AnxA1 exacerbated the inflammatory response in an endometritis model via NLRP3 dysregulation, increased uterine mast cell activation, and plasma pro-inflammatory cytokine release.
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Affiliation(s)
- Renata R Vieira
- Department of Morphology and Genetics, Universidade Federal de São Paulo, Rua Botucatu 740, Edifício Lemos Torres - 3° andar, São Paulo, SP, 04023-900, Brazil
| | - Rafael André da Silva
- Biosciences Graduate Program, Institute of Biosciences, Letters and Exact Sciences, Universidade Estadual Paulista (UNESP), São José do Rio Preto, Brazil
| | - Gisela R S Sasso
- Department of Morphology and Genetics, Universidade Federal de São Paulo, Rua Botucatu 740, Edifício Lemos Torres - 3° andar, São Paulo, SP, 04023-900, Brazil
| | - Paulo C Franco
- Department of Morphology and Genetics, Universidade Federal de São Paulo, Rua Botucatu 740, Edifício Lemos Torres - 3° andar, São Paulo, SP, 04023-900, Brazil
| | - Fernanda T Borges
- Department of Medicine, Nephrology Division, Universidade Federal de São Paulo (UNIFESP), Sao Paulo, SP, 04038-901, Brazil
| | - Patrícia D A Lima
- Queen's Cardiopulmonary Unit (QCPU), Queen's University, Kingston, ON, K7L 3N6, Canada
| | - Jose Marcos Sanches
- School of Medicine, Universidade do Oeste Paulista (UNOESTE), Guaruja, SP, 11441-225, Brazil
| | - Cristiane D Gil
- Department of Morphology and Genetics, Universidade Federal de São Paulo, Rua Botucatu 740, Edifício Lemos Torres - 3° andar, São Paulo, SP, 04023-900, Brazil.
- Biosciences Graduate Program, Institute of Biosciences, Letters and Exact Sciences, Universidade Estadual Paulista (UNESP), São José do Rio Preto, Brazil.
| | - Adriana A F Carbonel
- Department of Morphology and Genetics, Universidade Federal de São Paulo, Rua Botucatu 740, Edifício Lemos Torres - 3° andar, São Paulo, SP, 04023-900, Brazil
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Feng D, Li Y, Zheng H, Wang Y, Deng J, Liu T, Liao W, Shen F. IL-4-induced M2 macrophages inhibit fibrosis of endometrial stromal cells. Reprod Biol 2024; 24:100852. [PMID: 38354656 DOI: 10.1016/j.repbio.2023.100852] [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: 05/08/2023] [Revised: 12/27/2023] [Accepted: 12/28/2023] [Indexed: 02/16/2024]
Abstract
BACKGROUND Intrauterine adhesions (IUA) refers to endometrial fibrosis caused by irreversible damage of the endometrial basal layer. As the key regulators in tissue repair, regeneration, and fibrosis, macrophages play an essential role in endometrial regeneration and repair during the normal menstrual cycle. However, the mechanism of macrophages involved in IUA remains unclear. METHODS In the late stages of proliferation, the endometrium was collected to make paraffin sections. HE and Masson staining were used to observing endometrial morphology and endometrial fibrosis. Immunohistochemistry and Western blotting were used to detect the expression level of fibrosis indexes COL1A1 and α-SMA. The macrophage infiltration was evaluated by immunohistochemistry for the expression levels of CD 206 and CD163. Next, we cultured the primary human endometrial stromal cells (HESCs), and then an IUA cell model was established with 10 ng/ml TGF-β1 for 72 h. THP 1 cells were differentiated by 100 ng/ml PMA into macrophages for 48 h, then macrophages were polarized to M2 macrophages by 20 ng/ml IL-4 for 24 h. The culture supernatants (M(IL-4) -S) of M2 macrophages were applied to the IUA cell model. The expression of fibrosis markers was then assessed using immunofluorescence and Western blotting. RESULTS The results show that Patients with IUA have fewer endometrial glands and significantly increased fibrosis levels. Moreover, the infiltration of CD206-positive (M2) macrophages was significantly reduced in IUA patients, and negatively correlated with the expression of endometrial fibrosis indexes α-SMA and COL1A1. In addition, the primary HESCs treated with 10 ng/ml TGF-β1 for 72 h were found to have significantly increased levels of fibrosis indexes. Furthermore, supernatants from IL4-induced M2 macrophages inhibit the TGF-β1-induced fibrosis of HESCs. CONCLUSIONS M2 macrophages may negatively regulate the expression of COL1A1 and α-SMA, inhibiting the TGF-β1-induced fibrosis of HESCs. Our study suggests that targeting macrophage phenotypes and promoting the polarization of macrophages to M2 may become a novel strategy for the clinical treatment of IUA.
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Affiliation(s)
- Dan Feng
- Department of Gynecology, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, PR China
| | - Yang Li
- Department of Gynecology, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, PR China
| | - Hongyun Zheng
- Department of Clinical Laboratory, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, PR China
| | - Ying Wang
- Department of Gynecology, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, PR China
| | - Juexiao Deng
- Department of Gynecology, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, PR China
| | - Tingting Liu
- Department of Gynecology, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, PR China
| | - Wenxin Liao
- Department of Gynecology, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, PR China
| | - Fujin Shen
- Department of Gynecology, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei Province, PR China.
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Targeting Tumor Microenvironment by Metal Peroxide Nanoparticles in Cancer Therapy. Bioinorg Chem Appl 2022; 2022:5041399. [PMID: 36568636 PMCID: PMC9788889 DOI: 10.1155/2022/5041399] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 12/07/2022] [Accepted: 12/10/2022] [Indexed: 12/23/2022] Open
Abstract
Solid tumors have a unique tumor microenvironment (TME), which includes hypoxia, low acidity, and high hydrogen peroxide and glutathione (GSH) levels, among others. These unique factors, which offer favourable microenvironments and nourishment for tumor development and spread, also serve as a gateway for specific and successful cancer therapies. A good example is metal peroxide structures which have been synthesized and utilized to enhance oxygen supply and they have shown great promise in the alleviation of hypoxia. In a hypoxic environment, certain oxygen-dependent treatments such as photodynamic therapy and radiotherapy fail to respond and therefore modulating the hypoxic tumor microenvironment has been found to enhance the antitumor impact of certain drugs. Under acidic environments, the hydrogen peroxide produced by the reaction of metal peroxides with water not only induces oxidative stress but also produces additional oxygen. This is achieved since hydrogen peroxide acts as a reactive substrate for molecules such as catalyse enzymes, alleviating tumor hypoxia observed in the tumor microenvironment. Metal ions released in the process can also offer distinct bioactivity in their own right. Metal peroxides used in anticancer therapy are a rapidly evolving field, and there is good evidence that they are a good option for regulating the tumor microenvironment in cancer therapy. In this regard, the synthesis and mechanisms behind the successful application of metal peroxides to specifically target the tumor microenvironment are highlighted in this review. Various characteristics of TME such as angiogenesis, inflammation, hypoxia, acidity levels, and metal ion homeostasis are addressed in this regard, together with certain forms of synergistic combination treatments.
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Lampiasi N. Macrophage Polarization: Learning to Manage It. Int J Mol Sci 2022; 23:ijms23137208. [PMID: 35806211 PMCID: PMC9266891 DOI: 10.3390/ijms23137208] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 06/23/2022] [Accepted: 06/27/2022] [Indexed: 11/16/2022] Open
Affiliation(s)
- Nadia Lampiasi
- Consiglio Nazionale delle Ricerche, Istituto per la Ricerca e l'Innovazione Biomedica, Via Ugo La Malfa 153, 90146 Palermo, Italy
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