BMP6 increases CD68 expression by up-regulating CTGF expression in human granulosa-lutein cells. 2021

Xin-Yue Zhang, and Hsun-Ming Chang, and Yuyin Yi, and Hua Zhu, and Rui-Zhi Liu, and Peter C K Leung
Center for Reproductive Medicine, The First Hospital of Jilin University, Changchun, Jilin, China; Department of Obstetrics and Gynaecology, BC Children's Hospital Research Institute, University of British Columbia, Vancouver, British Columbia, V5Z 4H4, Canada.

Bone morphogenetic protein 6 (BMP6) and connective tissue growth factor (CTGF) are critical growth factors required for normal follicular development and luteal function. Cluster of Differentiation 68 (CD68) is an intraovarian marker of macrophages that plays an important role in modulating the physiological regression of the corpus luteum. The aim of this study was to investigate the effect of BMP6 on the expression of CTGF and the subsequent increase in CD68 expression as well as its underlying mechanisms. Primary and immortalized (SVOG) human granulosa cells obtained from infertile women undergoing in vitro fertilization treatment were used as cell models to conduct the in vitro experiments. Our results showed that BMP6 treatment significantly increased the expression levels of CTGF and CD68. Using BMP type I receptor inhibitors (dorsomorphin, DMH-1 and SB431542), we demonstrated that both activin receptor-like kinase (ALK)2 and ALK3 are involved in BMP6-induced stimulatory effects on the expression of CTGF and CD68. Additionally, SMAD4-knock down reversed the BMP6-induced up-regulation of CTGF and CD68, indicating that the canonical SMAD signaling pathway is required for these effects. Moreover, CTGF-knock down abolished the BMP6-induced up-regulation of CD68 expression. These findings indicate that intrafollicular CTGF mediates BMP6-induced increases in CD68 expression through the ALK2/ALK3-mediated SMAD-dependent signaling pathway.

UI MeSH Term Description Entries
D007247 Infertility, Female Diminished or absent ability of a female to achieve conception. Sterility, Female,Sterility, Postpartum,Sub-Fertility, Female,Subfertility, Female,Female Infertility,Female Sterility,Female Sub-Fertility,Female Subfertility,Postpartum Sterility,Sub Fertility, Female
D008184 Luteal Cells PROGESTERONE-producing cells in the CORPUS LUTEUM. The large luteal cells derive from the GRANULOSA CELLS. The small luteal cells derive from the THECA CELLS. Lutein Cells,Granulosa-Luteal Cells,Granulosa-Lutein Cells,Large Luteal Cells,Small Luteal Cells,Theca-Luteal cells,Theca-Lutein Cells,Cell, Granulosa-Luteal,Cell, Granulosa-Lutein,Cell, Large Luteal,Cell, Luteal,Cell, Lutein,Cell, Small Luteal,Cell, Theca-Lutein,Cells, Granulosa-Luteal,Cells, Granulosa-Lutein,Cells, Large Luteal,Cells, Luteal,Cells, Lutein,Cells, Small Luteal,Cells, Theca-Lutein,Granulosa Luteal Cells,Granulosa Lutein Cells,Granulosa-Luteal Cell,Granulosa-Lutein Cell,Large Luteal Cell,Luteal Cell,Luteal Cell, Large,Luteal Cell, Small,Luteal Cells, Large,Luteal Cells, Small,Lutein Cell,Small Luteal Cell,Theca Luteal cells,Theca Lutein Cells,Theca-Luteal cell,Theca-Lutein Cell,cell, Theca-Luteal,cells, Theca-Luteal
D002460 Cell Line Established cell cultures that have the potential to propagate indefinitely. Cell Lines,Line, Cell,Lines, Cell
D005260 Female Females
D005307 Fertilization in Vitro An assisted reproductive technique that includes the direct handling and manipulation of oocytes and sperm to achieve fertilization in vitro. Test-Tube Fertilization,Fertilizations in Vitro,In Vitro Fertilization,Test-Tube Babies,Babies, Test-Tube,Baby, Test-Tube,Fertilization, Test-Tube,Fertilizations, Test-Tube,In Vitro Fertilizations,Test Tube Babies,Test Tube Fertilization,Test-Tube Baby,Test-Tube Fertilizations
D006107 Granulosa Cells Supporting cells for the developing female gamete in the OVARY. They are derived from the coelomic epithelial cells of the gonadal ridge. Granulosa cells form a single layer around the OOCYTE in the primordial ovarian follicle and advance to form a multilayered cumulus oophorus surrounding the OVUM in the Graafian follicle. The major functions of granulosa cells include the production of steroids and LH receptors (RECEPTORS, LH). Cell, Granulosa,Cells, Granulosa,Granulosa Cell
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D015214 Antigens, Differentiation, Myelomonocytic Surface antigens expressed on myeloid cells of the granulocyte-monocyte-histiocyte series during differentiation. Analysis of their reactivity in normal and malignant myelomonocytic cells is useful in identifying and classifying human leukemias and lymphomas. Differentiation Antigens, Myelomonocytic,Myelomonocytic Differentiation Antigens,Antigens, Myelomonocytic, Differentiation,Antigens, Myelomonocytic Differentiation
D015398 Signal Transduction The intracellular transfer of information (biological activation/inhibition) through a signal pathway. In each signal transduction system, an activation/inhibition signal from a biologically active molecule (hormone, neurotransmitter) is mediated via the coupling of a receptor/enzyme to a second messenger system or to an ion channel. Signal transduction plays an important role in activating cellular functions, cell differentiation, and cell proliferation. Examples of signal transduction systems are the GAMMA-AMINOBUTYRIC ACID-postsynaptic receptor-calcium ion channel system, the receptor-mediated T-cell activation pathway, and the receptor-mediated activation of phospholipases. Those coupled to membrane depolarization or intracellular release of calcium include the receptor-mediated activation of cytotoxic functions in granulocytes and the synaptic potentiation of protein kinase activation. Some signal transduction pathways may be part of larger signal transduction pathways; for example, protein kinase activation is part of the platelet activation signal pathway. Cell Signaling,Receptor-Mediated Signal Transduction,Signal Pathways,Receptor Mediated Signal Transduction,Signal Transduction Pathways,Signal Transduction Systems,Pathway, Signal,Pathway, Signal Transduction,Pathways, Signal,Pathways, Signal Transduction,Receptor-Mediated Signal Transductions,Signal Pathway,Signal Transduction Pathway,Signal Transduction System,Signal Transduction, Receptor-Mediated,Signal Transductions,Signal Transductions, Receptor-Mediated,System, Signal Transduction,Systems, Signal Transduction,Transduction, Signal,Transductions, Signal
D015703 Antigens, CD Differentiation antigens residing on mammalian leukocytes. CD stands for cluster of differentiation, which refers to groups of monoclonal antibodies that show similar reactivity with certain subpopulations of antigens of a particular lineage or differentiation stage. The subpopulations of antigens are also known by the same CD designation. CD Antigen,Cluster of Differentiation Antigen,Cluster of Differentiation Marker,Differentiation Antigens, Leukocyte, Human,Leukocyte Differentiation Antigens, Human,Cluster of Differentiation Antigens,Cluster of Differentiation Markers,Antigen Cluster, Differentiation,Antigen, CD,CD Antigens,Differentiation Antigen Cluster,Differentiation Marker Cluster,Marker Cluster, Differentiation

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