The regulatory role of Rho GTPases and their substrates in osteoclastogenesis

2020 ◽  
Vol 21 ◽  
Author(s):  
Lin Gao ◽  
Lingbo Kong ◽  
Yuanting Zhao
Keyword(s):  
Bone Loss ◽  
Therapeutic Target ◽  
Rho Gtpases ◽  
Molecular Mechanisms ◽  
Special Role ◽  
Cellular Functions ◽  
Potential Therapeutic Target ◽  
Cytoskeletal Organization ◽  
Osteoclastic Differentiation

: Pathological bone loss diseases (osteolysis, Paget’s diseases) are commonly caused by the over differentiation and activity of osteoclasts. The Rho GTPases family members Rac1/2 (Rac1 and Rac2) have been reported for their special role in exerting multiple cellular functions during osteoclastic differentiation, which including the most prominent function on dynamic actin cytoskeleton rearranging. Besides that, the increasing studies demonstrated the regulating effects of Rac1/2 on osteoclastic cytoskeletal organization is through the GEFs member Dock5. Although the amount of relevant studies on this topic still limited, there are several excellent studies have been reported for extensively explored the molecular mechanisms involved in Rac1/2 and Dock5 during the osteoclastogenesis regulation, as well as their role as the therapeutic target in bone loss disesases. Herein in this review, we aim to focus on recent advances studies for extensively understanding the role of Rho GTPases Rac1/2 and Dock5 in osteoclastogenesis, as well as their role as a potential therapeutic target in regulating osteoclastogenesis.

scholarly journals The role of Rho GTPases’ substrates Rac and Cdc42 in osteoclastogenesis and relevant natural medicinal products study

2020 ◽  
Vol 40 (7) ◽  
Author(s):  
Yuan Liu ◽  
Yusheng Dou ◽  
Liang Yan ◽  
Xiaobin Yang ◽  
Baorong He ◽  
...  
Keyword(s):  
Natural Products ◽  
Drug Discovery ◽  
Bone Loss ◽  
Rho Gtpases ◽  
Medicinal Products ◽  
Cellular Functions ◽  
Recent Advancement ◽  
And Function ◽  
Cytoskeleton Rearrangements

Abstract Recently, Rho GTPases substrates include Rac (Rac1 and Rac2) and Cdc42 that have been reported to exert multiple cellular functions in osteoclasts, the most prominent of which includes regulating the dynamic actin cytoskeleton rearrangements. In addition, natural products and their molecular frameworks have a long tradition as valuable starting points for medicinal chemistry and drug discovery. Although currently, there are reports about the natural product, which could play a therapeutic role in bone loss diseases (osteoporosis and osteolysis) through the regulation of Rac1/2 and Cdc42 during osteoclasts cytoskeletal structuring. There have been several excellent studies for exploring the therapeutic potentials of various natural products for their role in inhibiting cancer cells migration and function via regulating the Rac1/2 and Cdc42. Herein in this review, we try to focus on recent advancement studies for extensively understanding the role of Rho GTPases substrates Rac1, Rac2 and Cdc42 in osteoclastogenesis, as well as therapeutic potentials of natural medicinal products for their properties on the regulation of Rac1, and/or Rac2 and Cdc42, which is in order to inspire drug discovery in regulating osteoclastogenesis.

Role of Rho-GTPases and their regulatory proteins in glomerular podocyte function

2013 ◽  
Vol 91 (10) ◽  
pp. 773-782 ◽  
Author(s):  
Flaviana Mouawad ◽  
Harmony Tsui ◽  
Tomoko Takano
Keyword(s):  
Rho Gtpases ◽  
Molecular Mechanisms ◽  
Complex Structure ◽  
Critical Role ◽  
Normal Function ◽  
Small Gtpases ◽  
Guanine Nucleotide ◽  
Nucleotide Exchange ◽  
Cellular Functions

Podocytes play a critical role in maintaining glomerular permselectivity. It has been long recognized that their intricate actin-based structures are tightly associated with their normal function; however, the precise mechanisms by which podocytes form and maintain their complex structure had been poorly understood until the intensive investigations on podocyte biology began in 1998, triggered by the breakthrough discovery of nephrin. This review summarizes the recent discoveries of the molecular mechanisms by which the actin cytoskeleton is regulated in podocytes. A particular focus will be on the role of the Rho-family of small GTPases, represented by RhoA, Rac1, and Cdc42. Rho-GTPases are known for their versatile cellular functions, most importantly for the actin regulatory roles. We will also discuss the potential roles of the 3 groups of proteins known to regulate Rho-GTPases, namely GTPase-activating proteins, guanine nucleotide exchange factors, and guanine nucleotide dissociation inhibitors.

Evaluation of MACF1-regulatory non-coding RNA as a potential therapeutic target in Colorectal Cancer

QJM ◽  
2021 ◽  
Vol 114 (Supplement_1) ◽  
Author(s):  
Rowaida Mohammed Reda M. M Aboushahba ◽  
Fayda Ibrahim Abdel Motaleb ◽  
Ahmed Abdel Aziz Abou-Zeid ◽  
Enas Samir Nabil ◽  
Dalia Abdel-Wahab Mohamed ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Cell Proliferation ◽  
Wnt Signaling ◽  
Cell Line ◽  
Signaling Pathway ◽  
Therapeutic Target ◽  
Molecular Mechanisms ◽  
Wnt Signaling Pathway ◽  
Control Group ◽  
Potential Therapeutic Target

ABSTRACT Colorectal cancer (CRC) is one of the leading causes of cancer-related deaths world-wide. There is an increasing need for the identification of novel biomarkers/targets for early diagnosis and for the development of novel chemopreventive and therapeutic agents for CRC. Recently, MACF1 gene has emerged as a potential therapeutic target in cancer as it involved in processes critical for tumor cell proliferation, invasion and metastasis. It is suggested that MACF1 may function in cancers through Wnt signaling. MiR-34a is a well-known tumor suppressor miRNA.miR-34a targets MACF1 gene as a part of the wnt signaling pathway. In this study, 40 colonic tissues were collected from CRC patients (20) and control subjects (20). miR-34a-5p was assessed by real time PCR in all study groups. The results showed highly significant decrease (P < 0.01) in miR-34a relative expression in the CRC group (median RQ 0.13) when compared to the benign group (median RQ 5.3) and the healthy control group (median RQ 19.63). miR-34a mimic and inhibitor were transfected in CaCo-2 cell line and proliferation was assessed. The transfection of the cell line with miR-34a mimic decreased cell proliferation. Our study suggests that miR-34a-5p targets MACF1 gene as a part of the wnt signaling pathway leading to the involvement in the molecular mechanisms of CRC development and progression.

scholarly journals The Role of Cellular Prion Protein in Cancer Biology: A Potential Therapeutic Target

2021 ◽  
Vol 11 ◽  
Author(s):  
Manqiu Ding ◽  
Yongqiang Chen ◽  
Yue Lang ◽  
Li Cui
Keyword(s):  
Stem Cells ◽  
Nervous System ◽  
Cell Survival ◽  
Cancer Cells ◽  
Prion Protein ◽  
Therapeutic Target ◽  
Cancer Biology ◽  
Cellular Prion Protein ◽  
Potential Therapeutic Target

Prion protein has two isoforms including cellular prion protein (PrPC) and scrapie prion protein (PrPSc). PrPSc is the pathological aggregated form of prion protein and it plays an important role in neurodegenerative diseases. PrPC is a glycosylphosphatidylinositol (GPI)-anchored protein that can attach to a membrane. Its expression begins at embryogenesis and reaches the highest level in adulthood. PrPC is expressed in the neurons of the nervous system as well as other peripheral organs. Studies in recent years have disclosed the involvement of PrPC in various aspects of cancer biology. In this review, we provide an overview of the current understanding of the roles of PrPC in proliferation, cell survival, invasion/metastasis, and stem cells of cancer cells, as well as its role as a potential therapeutic target.

scholarly journals SHP2 promotes NETosis through ERK5 pathway and mediates the development of psoriasis

2021 ◽  
Author(s):  
Yang Sun ◽  
Yan Ding ◽  
Jiao Qu ◽  
Chenyang Zhang ◽  
Yuyu Zhu ◽  
...  
Keyword(s):  
Immune Cells ◽  
Experimental Verification ◽  
Inflammatory Disease ◽  
Therapeutic Target ◽  
Tyrosine Phosphatase ◽  
Skin Lesions ◽  
Chronic Inflammatory Disease ◽  
Potential Therapeutic Target ◽  
Single Cell Rna Sequencing

Psoriasis is a chronic inflammatory disease which infiltrated a large number of neutrophils among skin lesions. Here, we investigated the contribution of tyrosine phosphatase SHP2 in neutrophils, as well as its pathogenesis in psoriasis. We combined single-cell RNA sequencing with experimental verification to declare that SHP2 in neutrophils could promote the NETs formation through the ERK5 pathway, and resulted in the infiltration of inflammatory immune cells, which leads to psoriasis. Our study provides evidence for the role of SHP2 in NETosis in the progression of psoriasis, and SHP2 may be a potential therapeutic target for the treatment of psoriasis.

scholarly journals The Role of Heparanase in the Pathogenesis of Acute Pancreatitis: A Potential Therapeutic Target

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Iyad Khamaysi ◽  
Preeti Singh ◽  
Susan Nasser ◽  
Hoda Awad ◽  
Yehuda Chowers ◽  
...  
Keyword(s):  
Acute Pancreatitis ◽  
Therapeutic Target ◽  
Potential Therapeutic Target

Role of spinal neurons in the maintenance of elevated sympathetic activity: a novel therapeutic target?

2020 ◽  
Vol 319 (3) ◽  
pp. R282-R287
Author(s):  
Maycon I. O. Milanez ◽  
Erika E. Nishi ◽  
Cássia T. Bergamaschi ◽  
Ruy R. Campos
Keyword(s):  
Cardiovascular Diseases ◽  
Therapeutic Target ◽  
Sympathetic Activity ◽  
Spinal Neurons ◽  
Potential Therapeutic Target ◽  
Present Evidence ◽  
Extensive Range ◽  
Vasomotor Activity ◽  
The Brain

The control of sympathetic vasomotor activity involves a complex network within the brain and spinal circuits. An extensive range of studies has indicated that sympathoexcitation is a common feature in several cardiovascular diseases and that strategies to reduce sympathetic vasomotor overactivity in such conditions can be beneficial. In the present mini-review, we present evidence supporting the spinal cord as a potential therapeutic target to mitigate sympathetic vasomotor overactivity in cardiovascular diseases, focusing mainly on the actions of spinal angiotensin II on the control of sympathetic preganglionic neuronal activity.

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