1
|
Repetto F, Sirohi D, Greipp P, Mahlow J. Incidental Detection of TFEB-Amplified Renal Cell Carcinoma by Colocated Gene Amplification of CCND3 (6p21): A Case Report and Review of the Literature. Int J Surg Pathol 2024; 32:551-555. [PMID: 37394760 DOI: 10.1177/10668969231185081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2023]
Abstract
TFEB-amplified renal cell carcinoma (RCC), which belongs to the MITF family of RCC, is characterized by genomic amplification at the 6p21.1 locus where the TFEB gene is located. The vascular endothelial growth factor A and cyclin D3 genes are also located at this same locus. When tumors lack classic morphologic features, they may be classified as "RCC not otherwise specified (NOS)." However, it is increasingly important to accurately diagnose the RCC subtype to define the patient's individual prognosis and select the subsequent therapeutic modalities, which now include targeted agents. Therefore, knowledge of the diagnostic features of TFEB-altered RCCs, such as t(6;11) RCCs and TFEB-amplified RCCs, is critical for identifying these tumors. Herein, we present an interesting case of TFEB-amplified RCC that was initially diagnosed as RCC NOS on biopsy of a renal tumor in a community practice setting with available molecular findings demonstrating CCND3 amplification. The genetic abnormality was "accidentally" detected due to the amplification of the colocated CCND3 gene at the 6p21 locus of the TFEB gene on a limited genetic sequencing panel. This case highlights the importance of molecular tests in accurately diagnosing RCC and carefully interpreting molecular findings in the context of histomorphologic features.
Collapse
Affiliation(s)
- Federico Repetto
- Favaloro University, School of Medicine, Buenos Aires, Argentina
| | - Deepika Sirohi
- University of Utah, Department of Pathology, Salt Lake City, UT, USA
| | - Patricia Greipp
- Mayo Clinic, Laboratory Medicine and Pathology, Rochester, MN, USA
| | - Jonathon Mahlow
- University of Utah, Department of Pathology, Salt Lake City, UT, USA
| |
Collapse
|
2
|
Henry C, Wilcox M, Asirvatham AL. Forskolin-mediated cAMP activation upregulates TNF-α expression despite NF-κB downregulation in LPS-treated Schwann cells. PLoS One 2024; 19:e0302223. [PMID: 38625986 PMCID: PMC11020835 DOI: 10.1371/journal.pone.0302223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 03/30/2024] [Indexed: 04/18/2024] Open
Abstract
Although Schwann cells have been found to play a key role in inflammation and repair following nerve injury, the exact pathway is still unknown. To explore the mechanism by which Schwann cells exert their effects in the neuron microenvironment, we investigated two main inflammatory pathways: the NF-κB and cAMP pathways, and their downstream signaling molecules. In this study, lipopolysaccharide (LPS), a bacterial endotoxin, was used to activate the NF-κB pathway, and forskolin, a plant extract, was used to activate the cAMP pathway. The rat RT4-D6P2T Schwann cell line was treated with 0.1, 1, or 10 μg/mL of LPS, with or without 2 μM of forskolin, for 1, 3, 12, and 24 hours to determine the effects of elevated cAMP levels on LPS-treated cell viability. To investigate the effects of elevated cAMP levels on the expression of downstream signaling effector proteins, specifically NF-κB, TNF-α, AKAP95, and cyclin D3, as well as TNF-α secretion, RT4-D6P2T cells were incubated in the various treatment combinations for a 3-hour time period. Overall, results from the CellTiter-Glo viability assay revealed that forskolin increased viability in cells treated with smaller doses of LPS for 1 and 24 hours. For all time points, 10 μg/mL of LPS noticeably reduced viability regardless of forskolin treatment. Results from the Western blot analysis revealed that, at 10 μg/mL of LPS, forskolin upregulated the expression of TNF-α despite a downregulation of NF-κB, which was also accompanied by a decrease in TNF-α secretion. These results provide evidence that cAMP might regulate TNF-α expression through alternate pathways. Furthermore, although cAMP activation altered AKAP95 and cyclin D3 expression at different doses of LPS, there does not appear to be an association between the expression of AKAP95 or cyclin D3 and the expression of TNF-α. Exploring the possible interactions between cAMP, NF-κB, and other key inflammatory signaling pathways might reveal a potential therapeutic target for the treatment of nerve injury and inflammation.
Collapse
Affiliation(s)
- Caitlyn Henry
- Department of Biology, Misericordia University, Dallas, PA, United States of America
| | - Mackenzie Wilcox
- Department of Biology, Misericordia University, Dallas, PA, United States of America
| | - Angela L. Asirvatham
- Department of Biology, Misericordia University, Dallas, PA, United States of America
| |
Collapse
|
3
|
Lei L, Wang X, Zhang J, Yin J, Xu Q, Wang T, Jin Y, Wang A. Lipopolysaccharides of Brucella suis S2 Impaired the Process of Decidualization in Early Pregnancy in Mice. Toxins (Basel) 2023; 15:662. [PMID: 37999525 PMCID: PMC10675612 DOI: 10.3390/toxins15110662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 11/03/2023] [Accepted: 11/11/2023] [Indexed: 11/25/2023] Open
Abstract
Brucellosis is a notorious zoonotic disease caused by Brucella, which can lead to reproductive diseases in humans and animals, such as infertility and abortion. Lipopolysaccharides (LPS) are the main virulence factor of Brucella. LPS derived from Brucella are different and non-classical and are less toxic and less active than LPS isolated from E. coli. However, the effects and possible mechanisms of Brucella LPS-caused pregnancy loss remain to be revealed. In the present study, we investigated the effects of Brucella suis S2 LPS on early pregnancy loss in mice. The results indicated that embryo implantation failure was induced by Brucella LPS treatment in a dose-dependent manner. The injection of Brucella LPS mainly resulted in fibrinolysis in the decidual area of the uterus on the 6th day post coition (dpc), infiltration of large granular cells among the decidual cells near the embryo on the 8th dpc, a large number of gaps in the decidual area, and cell necrosis around the embryo. In addition, the expression of Cyclin D3 mRNA in the uterus on the 7th and 8th dpc and IGFBP-1 mRNA and the progesterone receptor in the uterus on the 6th and 7th dpc were also inhibited. Moreover, the expression of decidualization marker Cyclin D3 and decidualization prolactin-associated protein (dPRP) in endometrial stromal cells were also inhibited by Brucella LPS treatment in vitro. In summary, Brucella LPS affect the process of endometrial decidualization in mice by affecting the structure of the decidua and the expression of decidual marker factors in endometrial stromal cells.
Collapse
Affiliation(s)
- Lanjie Lei
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture and Rural Affairs, Northwest A&F University, Xianyang 712100, China; (L.L.); (X.W.); (J.Z.); (J.Y.); (Q.X.); (T.W.); (Y.J.)
- College of Veterinary Medicine, Northwest A&F University, Xianyang 712100, China
| | - Xiangguo Wang
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture and Rural Affairs, Northwest A&F University, Xianyang 712100, China; (L.L.); (X.W.); (J.Z.); (J.Y.); (Q.X.); (T.W.); (Y.J.)
- College of Veterinary Medicine, Northwest A&F University, Xianyang 712100, China
| | - Jianpo Zhang
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture and Rural Affairs, Northwest A&F University, Xianyang 712100, China; (L.L.); (X.W.); (J.Z.); (J.Y.); (Q.X.); (T.W.); (Y.J.)
- College of Veterinary Medicine, Northwest A&F University, Xianyang 712100, China
| | - Jiaojiao Yin
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture and Rural Affairs, Northwest A&F University, Xianyang 712100, China; (L.L.); (X.W.); (J.Z.); (J.Y.); (Q.X.); (T.W.); (Y.J.)
- College of Veterinary Medicine, Northwest A&F University, Xianyang 712100, China
| | - Qin Xu
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture and Rural Affairs, Northwest A&F University, Xianyang 712100, China; (L.L.); (X.W.); (J.Z.); (J.Y.); (Q.X.); (T.W.); (Y.J.)
- College of Veterinary Medicine, Northwest A&F University, Xianyang 712100, China
| | - Ting Wang
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture and Rural Affairs, Northwest A&F University, Xianyang 712100, China; (L.L.); (X.W.); (J.Z.); (J.Y.); (Q.X.); (T.W.); (Y.J.)
- College of Veterinary Medicine, Northwest A&F University, Xianyang 712100, China
| | - Yaping Jin
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture and Rural Affairs, Northwest A&F University, Xianyang 712100, China; (L.L.); (X.W.); (J.Z.); (J.Y.); (Q.X.); (T.W.); (Y.J.)
- College of Veterinary Medicine, Northwest A&F University, Xianyang 712100, China
| | - Aihua Wang
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture and Rural Affairs, Northwest A&F University, Xianyang 712100, China; (L.L.); (X.W.); (J.Z.); (J.Y.); (Q.X.); (T.W.); (Y.J.)
- College of Veterinary Medicine, Northwest A&F University, Xianyang 712100, China
| |
Collapse
|
4
|
Yang C, Xue JG. [LncRNA RPL22P1-201 affects prostate cancer cell proliferation, cell cycle, and sensitivity to docetaxel by regulating miR-216b-5p expression]. Zhonghua Nan Ke Xue 2023; 29:881-887. [PMID: 38639656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
OBJECTIVE Exploring the effects and mechanisms of long non coding RNA (lncRNA) RPL22P1-201 on prostate cancer cell proliferation, cell cycle, and docetaxel sensitivity by regulating miR-216b-5p expression. METHODS The Cancer LncRNA Census database was used to analyze the differential expression of RPL22P1-201 between prostate cancer tissue and normal tissue. Real time quantitative polymerase chain reaction (qRT-PCR) was used to detect the expression level of RPL22P1-201 in prostate cancer cell lines (DU-145, C4-2B, PC3, 22Rv1, LNCaP) and normal prostate epithelial cells (RWPE-1). PC3 cells were divided into si-RPL22P1-201 group (transfected with RPL22P1-201 interference sequence) and si-NC group (transfected with si-NC sequence). Colony formation assay was used to detect the proliferation ability of PC3 cells. Flow cytometry was used to detect the PC3 cell cycle. The CCK-8 method was used to detect the proliferation of PC3 cells in each group after treatment with docetaxel. The dual luciferase reporter gene experiment verifies the binding of RPL22P1-201 to the target gene. qRT-PCR was used to detect the expression level of miR-216b-5p. Western blot was used to detect the expression levels of TrkB, CDK4, cyclin D2, cyclin D3, and CDK6 proteins. RESULTS The expression level of RPL22P1-201 in prostate cancer tissue was higher than that in normal tissue (P<0.01). The expression level of RPL22P1-201 in prostate cancer cell lines was higher than that in normal prostate epithelial cells (P<0.01). The number of colonies in the si-NC group and si-RPL22P1-201 group was (256.1 ± 28.79) and (78.77 ± 14.52), respectively. The difference was statistically significant (P<0.01). The G0/G1 cell rates in the si-NC group and si-RPL22P1-201 group were (43.18 ± 4.56)% and (68.85 ± 3.40)%, respectively. The S cell rates were (36.84 ± 2.28)% and (24.27 ± 2.74)%, respectively. The G2/M cell rates were (19.98 ± 2.69)% and (6.88 ± 1.57)%, respectively, and the differences were statistically significant (all P<0.05). The cell survival rate of the si-RPL22P1-201 group under the action of docetaxel was lower than that of the si-NC group (all P<0.05). RPL22P1-201 can pair and bind with miR-216b-5p (P<0.01). Compared with the si-NC group, the si-RPL22P1-201 group showed a decrease in miR-216b-5p expression in PC3 cells (P<0.01), and a decrease in TrkB, CDK4, cyclin D2, cyclin D3, and CDK6 protein expression. CONCLUSIONS RPL22P1-201 is highly expressed in prostate cancer, and silencing RPL22P1-201 inhibits prostate cancer PC3 cell proliferation and cell cycle by increasing miR-216b-5p expression, and enhances PC3 cell sensitivity to docetaxel.
Collapse
Affiliation(s)
- Chao Yang
- Department of Andrology, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210023 Jiangsu, China
- Department of Andrology, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture Enshi, 445000 Hubei, China
| | - Jian-Guo Xue
- Department of Andrology, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210023 Jiangsu, China
| |
Collapse
|
5
|
Gao X, Wu Y, Chick JM, Abbott A, Jiang B, Wang DJ, Comte-Walters S, Johnson RH, Oberholtzer N, Nishimura MI, Gygi SP, Mehta A, Guttridge DC, Ball L, Mehrotra S, Sicinski P, Yu XZ, Wang H. Targeting protein tyrosine phosphatases for CDK6-induced immunotherapy resistance. Cell Rep 2023; 42:112314. [PMID: 37000627 PMCID: PMC10544673 DOI: 10.1016/j.celrep.2023.112314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 12/20/2022] [Accepted: 03/14/2023] [Indexed: 04/01/2023] Open
Abstract
Elucidating the mechanisms of resistance to immunotherapy and developing strategies to improve its efficacy are challenging goals. Bioinformatics analysis demonstrates that high CDK6 expression in melanoma is associated with poor progression-free survival of patients receiving single-agent immunotherapy. Depletion of CDK6 or cyclin D3 (but not of CDK4, cyclin D1, or D2) in cells of the tumor microenvironment inhibits tumor growth. CDK6 depletion reshapes the tumor immune microenvironment, and the host anti-tumor effect depends on cyclin D3/CDK6-expressing CD8+ and CD4+ T cells. This occurs by CDK6 phosphorylating and increasing the activities of PTP1B and T cell protein tyrosine phosphatase (TCPTP), which, in turn, decreases tyrosine phosphorylation of CD3ζ, reducing the signal transduction for T cell activation. Administration of a PTP1B and TCPTP inhibitor prove more efficacious than using a CDK6 degrader in enhancing T cell-mediated immunotherapy. Targeting protein tyrosine phosphatases (PTPs) might be an effective strategy for cancer patients who resist immunotherapy treatment.
Collapse
Affiliation(s)
- Xueliang Gao
- Department of Cell and Molecular Pharmacology & Experimental Therapeutics, Medical University of South Carolina, Charleston, SC 29425, USA; Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425, USA.
| | - Yongxia Wu
- Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Joel M Chick
- Department of Cell Biology, Harvard Medical School, Boston, MA 02215, USA
| | - Andrea Abbott
- Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425, USA; Department of Surgery, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Baishan Jiang
- Department of Cancer Biology, Dana-Farber Cancer Institute, and Harvard Medical School, Boston, MA 02215, USA
| | - David J Wang
- Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Susana Comte-Walters
- Department of Cell and Molecular Pharmacology & Experimental Therapeutics, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Roger H Johnson
- Department of Biophysics, Medical College of Wisconsin, Milwaukee, WI 53226, USA; Cancer Center, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Nathaniel Oberholtzer
- Department of Surgery, Medical University of South Carolina, Charleston, SC 29425, USA
| | | | - Steven P Gygi
- Department of Cell Biology, Harvard Medical School, Boston, MA 02215, USA
| | - Anand Mehta
- Department of Cell and Molecular Pharmacology & Experimental Therapeutics, Medical University of South Carolina, Charleston, SC 29425, USA; Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Denis C Guttridge
- Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Lauren Ball
- Department of Cell and Molecular Pharmacology & Experimental Therapeutics, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Shikhar Mehrotra
- Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425, USA; Department of Surgery, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Piotr Sicinski
- Department of Cancer Biology, Dana-Farber Cancer Institute, and Harvard Medical School, Boston, MA 02215, USA; Department of Genetics, Blavatnik Institute, Harvard Medical School, Boston, MA 02215, USA
| | - Xue-Zhong Yu
- Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425, USA; Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Haizhen Wang
- Department of Cell and Molecular Pharmacology & Experimental Therapeutics, Medical University of South Carolina, Charleston, SC 29425, USA; Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425, USA.
| |
Collapse
|
6
|
Zheng T, Dai L, Liu Y, Li S, Zheng M, Zhao Z, Qu GZ. Overexpression Populus d-Type Cyclin Gene PsnCYCD1;1 Influences Cell Division and Produces Curved Leaf in Arabidopsis thaliana. Int J Mol Sci 2021; 22:ijms22115837. [PMID: 34072501 PMCID: PMC8197873 DOI: 10.3390/ijms22115837] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 05/26/2021] [Accepted: 05/27/2021] [Indexed: 11/16/2022] Open
Abstract
d-type cyclins (CYCDs) are a special class of cyclins and play extremely important roles in plant growth and development. In the plant kingdom, most of the existing studies on CYCDs have been done on herbaceous plants, with few on perennial woody plants. Here, we identified a Populus d-type cyclin gene, PsnCYCD1;1, which is mainly transcribed in leaf buds and stems. The promoter of PsnCYCD1;1 activated GUS gene expression and transgenic Arabidopsis lines were strongly GUS stained in whole seedlings and mature anthers. Moreover, subcellular localization analysis showed the fluorescence signal of PsnCYCD1;1-GFP fusion protein is present in the nucleus. Furthermore, overexpression of the PsnCYCD1;1 gene in Arabidopsis can promote cell division and lead to small cell generation and cytokinin response, resulting in curved leaves and twisted inflorescence stems. Moreover, the transcriptional levels of endogenous genes, such as ASs, KNATs, EXP10, and PHB, were upregulated by PsnCYCD1;1. Together, our results indicated that PsnCYCD1;1 participates in cell division by cytokinin response, providing new information on controlling plant architecture in woody plants.
Collapse
Affiliation(s)
- Tangchun Zheng
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China; (T.Z.); (L.D.); (Y.L.); (S.L.); (M.Z.); (Z.Z.)
- National Engineering Research Center for Floriculture, School of Landscape Architecture, Beijing Forestry University, Beijing 100083, China
| | - Lijuan Dai
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China; (T.Z.); (L.D.); (Y.L.); (S.L.); (M.Z.); (Z.Z.)
| | - Yi Liu
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China; (T.Z.); (L.D.); (Y.L.); (S.L.); (M.Z.); (Z.Z.)
| | - Shuang Li
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China; (T.Z.); (L.D.); (Y.L.); (S.L.); (M.Z.); (Z.Z.)
| | - Mi Zheng
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China; (T.Z.); (L.D.); (Y.L.); (S.L.); (M.Z.); (Z.Z.)
| | - Zhongnan Zhao
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China; (T.Z.); (L.D.); (Y.L.); (S.L.); (M.Z.); (Z.Z.)
| | - Guan-Zheng Qu
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China; (T.Z.); (L.D.); (Y.L.); (S.L.); (M.Z.); (Z.Z.)
- Correspondence: ; Tel.: +86-451-8219-2693
| |
Collapse
|
7
|
Sala E, Vived C, Luna J, Saavedra-Ávila NA, Sengupta U, Castaño AR, Villar-Pazos S, Haba L, Verdaguer J, Ropero AB, Stratmann T, Pizarro J, Vázquez-Carrera M, Nadal A, Lahti JM, Mora C. CDK11 Promotes Cytokine-Induced Apoptosis in Pancreatic Beta Cells Independently of Glucose Concentration and Is Regulated by Inflammation in the NOD Mouse Model. Front Immunol 2021; 12:634797. [PMID: 33664748 PMCID: PMC7923961 DOI: 10.3389/fimmu.2021.634797] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Accepted: 01/07/2021] [Indexed: 11/13/2022] Open
Abstract
Background Pancreatic islets are exposed to strong pro-apoptotic stimuli: inflammation and hyperglycemia, during the progression of the autoimmune diabetes (T1D). We found that the Cdk11(Cyclin Dependent Kinase 11) is downregulated by inflammation in the T1D prone NOD (non-obese diabetic) mouse model. The aim of this study is to determine the role of CDK11 in the pathogenesis of T1D and to assess the hierarchical relationship between CDK11 and Cyclin D3 in beta cell viability, since Cyclin D3, a natural ligand for CDK11, promotes beta cell viability and fitness in front of glucose. Methods We studied T1D pathogenesis in NOD mice hemideficient for CDK11 (N-HTZ), and, in N-HTZ deficient for Cyclin D3 (K11HTZ-D3KO), in comparison to their respective controls (N-WT and K11WT-D3KO). Moreover, we exposed pancreatic islets to either pro-inflammatory cytokines in the presence of increasing glucose concentrations, or Thapsigargin, an Endoplasmic Reticulum (ER)-stress inducing agent, and assessed apoptotic events. The expression of key ER-stress markers (Chop, Atf4 and Bip) was also determined. Results N-HTZ mice were significantly protected against T1D, and NS-HTZ pancreatic islets exhibited an impaired sensitivity to cytokine-induced apoptosis, regardless of glucose concentration. However, thapsigargin-induced apoptosis was not altered. Furthermore, CDK11 hemideficiency did not attenuate the exacerbation of T1D caused by Cyclin D3 deficiency. Conclusions This study is the first to report that CDK11 is repressed in T1D as a protection mechanism against inflammation-induced apoptosis and suggests that CDK11 lies upstream Cyclin D3 signaling. We unveil the CDK11/Cyclin D3 tandem as a new potential intervention target in T1D.
Collapse
Affiliation(s)
- Ester Sala
- Immunology Unit, Department of Experimental Medicine, Faculty of Medicine, University of Lleida, Lleida, Spain
- Institut de Recerca Biomèdica Lleida (IRB-LLeida), Lleida, Spain
| | - Celia Vived
- Immunology Unit, Department of Experimental Medicine, Faculty of Medicine, University of Lleida, Lleida, Spain
- Institut de Recerca Biomèdica Lleida (IRB-LLeida), Lleida, Spain
| | - Júlia Luna
- Immunology Unit, Department of Experimental Medicine, Faculty of Medicine, University of Lleida, Lleida, Spain
- Institut de Recerca Biomèdica Lleida (IRB-LLeida), Lleida, Spain
| | - Noemí Alejandra Saavedra-Ávila
- Immunology Unit, Department of Experimental Medicine, Faculty of Medicine, University of Lleida, Lleida, Spain
- Institut de Recerca Biomèdica Lleida (IRB-LLeida), Lleida, Spain
| | - Upasana Sengupta
- Immunology Unit, Department of Experimental Medicine, Faculty of Medicine, University of Lleida, Lleida, Spain
- Institut de Recerca Biomèdica Lleida (IRB-LLeida), Lleida, Spain
| | - A. Raúl Castaño
- Departament of Cell Biology, Physiology and Immunology, Autonomous University of Barcelona, Barcelona, Spain
| | - Sabrina Villar-Pazos
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche, IDiBE, Universidad Miguel Hernandez, Elche, Spain
- Department of Tumor Cell Biology, St. Jude Children’s Research Hospital, Memphis, TN, United States
| | - Laura Haba
- Experimental Diabetes Laboratory, Institute for Biomedical Research August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Joan Verdaguer
- Immunology Unit, Department of Experimental Medicine, Faculty of Medicine, University of Lleida, Lleida, Spain
- Institut de Recerca Biomèdica Lleida (IRB-LLeida), Lleida, Spain
| | - Ana B. Ropero
- Instituto de Bioingeniería, Universidad Miguel Hernández, Elche, Spain
| | - Thomas Stratmann
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, Barcelona, Spain
| | - Javier Pizarro
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, Faculty of Pharmacy and Food Sciences and Institute of Biomedicine (IBUB), University of Barcelona, Barcelona, Spain
- Spanish Biomedical Research Center in Diabetes and Associated Metabolic Diseases (CIBERDEM)—Instituto de Salud Carlos III, Madrid, Spain
- Pediatric Research Institute, Hospital Sant Joan de Déu, Esplugues de Llobregat, Spain
| | - Manuel Vázquez-Carrera
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, Faculty of Pharmacy and Food Sciences and Institute of Biomedicine (IBUB), University of Barcelona, Barcelona, Spain
- Spanish Biomedical Research Center in Diabetes and Associated Metabolic Diseases (CIBERDEM)—Instituto de Salud Carlos III, Madrid, Spain
- Pediatric Research Institute, Hospital Sant Joan de Déu, Esplugues de Llobregat, Spain
| | - Angel Nadal
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche, IDiBE, Universidad Miguel Hernandez, Elche, Spain
- Diabetes and Associated Metabolic Disorders CIBERDEM, Universidad Miguel Hernández de Elche, Elche, Spain
| | - Jill M. Lahti
- Department of Tumor Cell Biology, St. Jude Children’s Research Hospital, Memphis, TN, United States
| | - Conchi Mora
- Immunology Unit, Department of Experimental Medicine, Faculty of Medicine, University of Lleida, Lleida, Spain
- Institut de Recerca Biomèdica Lleida (IRB-LLeida), Lleida, Spain
| |
Collapse
|
8
|
Yu D, Liu Q, Qiao B, Jiang W, Zhang L, Shen X, Xie L, Liu H, Zhang D, Yang B, Kuang H. Exposure to acrylamide inhibits uterine decidualization via suppression of cyclin D3/p21 and apoptosis in mice. J Hazard Mater 2020; 388:121785. [PMID: 31818667 DOI: 10.1016/j.jhazmat.2019.121785] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 11/25/2019] [Accepted: 11/27/2019] [Indexed: 06/10/2023]
Abstract
Acrylamide (ACR), a neurotoxicity and carcinogenic chemical, has attracted considerable attention since it is present at high concentrations in thermally cooked carbohydrate-rich foods. ACR exposure significantly increased rate of fetal resorption, and decreased fetal body weights in mice. However, no detailed information is available about the effect of ACR on uterine decidualization, which is a vital process in the establishment of successful pregnancy. Thus, our aim of this study was to explore the effect and mechanism of ACR on uterine decidualization in vivo during mice pregnancy. Mice were gavaged with 0, 10, and 50 mg ACR /kg/day from gestational days (GD) 1 until GD 8, whereas pseudopregnant mice from pseudopregnant day (PPD) 4 until PPD 8. Results indicated ACR treatment dramatically reduced numbers of implanted embryos, and decreased the weights of implantation site and oil-induced uterus. Nevertheless, no significant difference was observed in the weights of no oil-induced uterus between control and ACR-treated group. Furthermore, ACR significantly reduced numbers of polyploidy and PCNA-positive decidual cells and expression of cyclin D3 and p21 proteins, and induced apoptosis of decidua, as presented by up-regulation of Bax and cleaved-caspase-3, and decreased Bcl-2 protein during normal pregnant and pseudopregnant process. In summary, ACR exposure significantly inhibited uterine endometrial decidualization via the apoptosis and suppression of cyclin D3/p21 in mice.
Collapse
Affiliation(s)
- Dainan Yu
- Department of Physiology, Basic Medical College, Nanchang University, Nanchang, Jiangxi, 330006, PR China.
| | - Qingyun Liu
- Department of Physiology, Basic Medical College, Nanchang University, Nanchang, Jiangxi, 330006, PR China; The Second Clinical Medical College, Nanchang University, Nanchang, Jiangxi, 330006, PR China.
| | - Bo Qiao
- Department of Physiology, Basic Medical College, Nanchang University, Nanchang, Jiangxi, 330006, PR China.
| | - Wenyu Jiang
- Department of Physiology, Basic Medical College, Nanchang University, Nanchang, Jiangxi, 330006, PR China.
| | - Lixia Zhang
- Department of Obstetrics and Gynecology, Affiliated Hospital of Gynecology and Children, Jiaxing University, Jiaxing, Zhejiang, 314001, PR China.
| | - Xin Shen
- Department of Physiology, Basic Medical College, Nanchang University, Nanchang, Jiangxi, 330006, PR China.
| | - Liping Xie
- Department of Physiology, Basic Medical College, Nanchang University, Nanchang, Jiangxi, 330006, PR China.
| | - Hui Liu
- Department of Physiology, Basic Medical College, Nanchang University, Nanchang, Jiangxi, 330006, PR China.
| | - Dalei Zhang
- Department of Physiology, Basic Medical College, Nanchang University, Nanchang, Jiangxi, 330006, PR China.
| | - Bei Yang
- Department of Physiology, Basic Medical College, Nanchang University, Nanchang, Jiangxi, 330006, PR China.
| | - Haibin Kuang
- Department of Physiology, Basic Medical College, Nanchang University, Nanchang, Jiangxi, 330006, PR China; Jiangxi Provincial Key Laboratory of Reproductive Physiology and Pathology, Medical Experimental Teaching Center, Nanchang University, Nanchang, Jiangxi, 330006, PR China.
| |
Collapse
|
9
|
Tao JL, Luo M, Sun H, Zhao HM, Sun QS, Huang ZM. Overexpression of tripartite motif containing 26 inhibits non-small cell lung cancer cell growth by suppressing PI3K/AKT signaling. Kaohsiung J Med Sci 2020; 36:417-422. [PMID: 32052576 DOI: 10.1002/kjm2.12194] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 01/08/2020] [Indexed: 12/12/2022] Open
Abstract
It has been reported that tripartite motif containing 26 (TRIM26) is involved in the tumorigenesis of some cancers, but its function in non-small cell lung cancer (NSCLC) is still unclear. In this study, we found that TRIM26 was markedly down-regulated in both of NSCLC tumor tissues and cell lines. Additionally, high expression of TRIM26 in NSCLC patients predicted a positive index for patients' overall survival. What is more, overexpression of TRIM26 significantly suppressed NSCLC cell growth. Our further studies indicated that overexpression of TRIM26 inhibited the phosphorylation of PI3K p85 and AKT. And overexpressed TRIM26 regulated cell cycle-related genes' expression, including downregulating CDK4, Cyclin A, Cyclin D1, Cyclin D3, and Cyclin E, and upregulating p27 expression. Finally, we found that TRIM26 up-regulated PTEN expression by stabilizing PTEN protein in NSCLC cells. Collectively, our present study indicated that TRIM26 was decreased in NSCLC and overexpression of TRIM26 inhibited NSCLC cell growth by suppressing PI3K/AKT pathway, which suggested that TRIM26 could be as a potential target for the treatment of NSCLC in the future.
Collapse
Affiliation(s)
- Jia-Li Tao
- Department of Emergency, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huai'an, China
| | - Man Luo
- Department of Emergency, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huai'an, China
| | - Hong Sun
- Department of Emergency, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huai'an, China
| | - Hong-Mei Zhao
- Department of Emergency, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huai'an, China
| | - Qing-Song Sun
- Department of Emergency, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huai'an, China
| | - Zi-Ming Huang
- Department of Emergency Surgery, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, Huai'an, China
| |
Collapse
|
10
|
Zhang G, Zhao H, Zhang C, Li X, Lyu Y, Qi D, Cui Y, Hu L, Wang Z, Liang Z, Cui S. TCP7 functions redundantly with several Class I TCPs and regulates endoreplication in Arabidopsis. J Integr Plant Biol 2019; 61:1151-1170. [PMID: 30474211 DOI: 10.1111/jipb.12749] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 11/12/2018] [Indexed: 05/24/2023]
Abstract
TCP (TEOSINTE BRANCHED1/CYCLOIDEA/PROLIFERATING CELL FACTOR) proteins, a family of plant-specific transcription factors, play important roles in many developmental processes. However, genetic and functional redundancy among class I TCP limits the analysis of their biological roles. Here, we identified a dominant-negative mutant of Arabidopsis thaliana TCP7 named leaf curling-upward (lcu), which exhibits smaller leaf cells and shorter hypocotyls than the wild type, due to defective endoreplication. A septuple loss-of-function mutant of TCP7, TCP8, TCP14, TCP15, TCP21, TCP22, and TCP23 displayed similar developmental defects to those of lcu. Genome-wide RNA-sequencing showed that lcu and the septuple mutant share many misexpressed genes. Intriguingly, TCP7 directly targets the CYCLIN D1;1 (CYCD1;1) locus and activates its transcription. We determined that the C-terminus of TCP7 accounts for its transcriptional activation activity. Furthermore, the mutant protein LCU exhibited reduced transcriptional activation activity due to the introduction of an EAR-like repressive domain at its C-terminus. Together, these observations indicate that TCP7 plays important roles during leaf and hypocotyl development, redundantly, with at least six class I TCPs, and regulates the expression of CYCD1;1 to affect endoreplication in Arabidopsis.
Collapse
Affiliation(s)
- Guofang Zhang
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei Normal University, Shijiazhuang, 050024, China
- Key Laboratory of Molecular and Cellular Biology of Ministry of Education, Hebei Normal University, Shijiazhuang, 050024, China
- Hebei Collaboration Innovation Center for Cell Signaling, Hebei Normal University, Shijiazhuang, 050024, China
- College of Life Science, Hebei Normal University, Shijiazhuang, 050024, China
| | - Hongtao Zhao
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei Normal University, Shijiazhuang, 050024, China
- Key Laboratory of Molecular and Cellular Biology of Ministry of Education, Hebei Normal University, Shijiazhuang, 050024, China
- Hebei Collaboration Innovation Center for Cell Signaling, Hebei Normal University, Shijiazhuang, 050024, China
- College of Life Science, Hebei Normal University, Shijiazhuang, 050024, China
| | - Chunguang Zhang
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei Normal University, Shijiazhuang, 050024, China
- College of Life Science, Hebei Normal University, Shijiazhuang, 050024, China
| | - Xiaoyun Li
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei Normal University, Shijiazhuang, 050024, China
- Key Laboratory of Molecular and Cellular Biology of Ministry of Education, Hebei Normal University, Shijiazhuang, 050024, China
- Hebei Collaboration Innovation Center for Cell Signaling, Hebei Normal University, Shijiazhuang, 050024, China
- College of Life Science, Hebei Normal University, Shijiazhuang, 050024, China
| | - Yuanyuan Lyu
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei Normal University, Shijiazhuang, 050024, China
- Key Laboratory of Molecular and Cellular Biology of Ministry of Education, Hebei Normal University, Shijiazhuang, 050024, China
- Hebei Collaboration Innovation Center for Cell Signaling, Hebei Normal University, Shijiazhuang, 050024, China
- College of Life Science, Hebei Normal University, Shijiazhuang, 050024, China
| | - Dongmei Qi
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei Normal University, Shijiazhuang, 050024, China
- Key Laboratory of Molecular and Cellular Biology of Ministry of Education, Hebei Normal University, Shijiazhuang, 050024, China
- Hebei Collaboration Innovation Center for Cell Signaling, Hebei Normal University, Shijiazhuang, 050024, China
- College of Life Science, Hebei Normal University, Shijiazhuang, 050024, China
| | - Yanwei Cui
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei Normal University, Shijiazhuang, 050024, China
- College of Life Science, Hebei Normal University, Shijiazhuang, 050024, China
| | - Lin Hu
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei Normal University, Shijiazhuang, 050024, China
- College of Life Science, Hebei Normal University, Shijiazhuang, 050024, China
| | - Zhenjie Wang
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei Normal University, Shijiazhuang, 050024, China
- College of Life Science, Hebei Normal University, Shijiazhuang, 050024, China
| | - Zheng Liang
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei Normal University, Shijiazhuang, 050024, China
- College of Life Science, Hebei Normal University, Shijiazhuang, 050024, China
| | - Sujuan Cui
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei Normal University, Shijiazhuang, 050024, China
- Key Laboratory of Molecular and Cellular Biology of Ministry of Education, Hebei Normal University, Shijiazhuang, 050024, China
- Hebei Collaboration Innovation Center for Cell Signaling, Hebei Normal University, Shijiazhuang, 050024, China
- College of Life Science, Hebei Normal University, Shijiazhuang, 050024, China
| |
Collapse
|
11
|
Chen H, Crosley P, Azad AK, Gupta N, Gokul N, Xu Z, Weinfeld M, Postovit LM, Pangas SA, Hitt MM, Fu Y. RUNX3 Promotes the Tumorigenic Phenotype in KGN, a Human Granulosa Cell Tumor-Derived Cell Line. Int J Mol Sci 2019; 20:ijms20143471. [PMID: 31311113 PMCID: PMC6678151 DOI: 10.3390/ijms20143471] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 07/02/2019] [Accepted: 07/12/2019] [Indexed: 12/17/2022] Open
Abstract
Granulosa cell tumors of the ovary (GCT) are the predominant type of ovarian sex cord/stromal tumor. Although prognosis is generally favorable, the outcome for advanced and recurrent GCT is poor. A better understanding of the molecular pathogenesis of GCT is critical to developing effective therapeutic strategies. Here we have examined the potential role of the runt-related transcription factor RUNX3. There are only two GCT cell lines available. While RUNX3 is silenced in the GCT cell line KGN cells, it is highly expressed in another GCT cell line, COV434 cells. Re-expression of RUNX3 promotes proliferation, anchorage-independent growth, and motility in KGN cells in vitro and tumor formation in mice in vivo. Furthermore, expression of a dominant negative form of RUNX3 decreases proliferation of COV434 cells. To address a potential mechanism of action, we examined expression of cyclin D2 and the CDK inhibitor p27Kip1, two cell cycle regulators known to be critical determinants of GCT cell proliferation. We found that RUNX3 upregulates the expression of cyclin D2 at the mRNA and protein level, and decreases the level of the p27Kip1 protein, but not p27Kip1 mRNA. In conclusion, we demonstrate that RUNX proteins are expressed in GCT cell lines and human GCT specimens, albeit at variable levels, and RUNX3 may play an oncogenic role in a subset of GCTs.
Collapse
Affiliation(s)
- Huachen Chen
- Department of Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2E1, Canada
| | - Powel Crosley
- Department of Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2E1, Canada
| | - Abul K Azad
- Department of Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2E1, Canada
| | - Nidhi Gupta
- Department of Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2E1, Canada
| | - Nisha Gokul
- Department of Pathology & Immunology and Department of Molecular & Cellular Biology, Baylor College of Medicine, Houston, TX 77030, USA
- Graduate Program in Molecular & Cellular Biology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Zhihua Xu
- Department of Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2E1, Canada
| | - Michael Weinfeld
- Department of Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2E1, Canada
| | - Lynne-Marie Postovit
- Department of Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2E1, Canada
- Department of Obstetrics and Gynecology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2E1, Canada
| | - Stephanie A Pangas
- Department of Pathology & Immunology and Department of Molecular & Cellular Biology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Mary M Hitt
- Department of Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2E1, Canada
| | - YangXin Fu
- Department of Oncology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2E1, Canada.
- Department of Obstetrics and Gynecology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2E1, Canada.
| |
Collapse
|
12
|
Baekelandt A, Pauwels L, Wang Z, Li N, De Milde L, Natran A, Vermeersch M, Li Y, Goossens A, Inzé D, Gonzalez N. Arabidopsis Leaf Flatness Is Regulated by PPD2 and NINJA through Repression of CYCLIN D3 Genes. Plant Physiol 2018; 178:217-232. [PMID: 29991485 PMCID: PMC6130026 DOI: 10.1104/pp.18.00327] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 06/28/2018] [Indexed: 05/18/2023]
Abstract
In Arabidopsis (Arabidopsis thaliana), reduced expression of the transcriptional regulator PEAPOD2 (PPD2) results in propeller-like rosettes with enlarged and dome-shaped leaves. However, the molecular and cellular processes underlying this peculiar phenotype remain elusive. Here, we studied the interaction between PPD2 and NOVEL INTERACTOR OF JAZ (NINJA) and demonstrated that ninja loss-of-function plants produce rosettes with dome-shaped leaves similar to those of ppd mutants but without the increase in size. We showed that ninja mutants have a convex-shaped primary cell cycle arrest front, putatively leading to excessive cell division in the central leaf blade region. Furthermore, ppd and ninja mutants have a similar increase in the expression of CYCLIN D3;2 (CYCD3;2), and ectopic overexpression of CYCD3;2 phenocopies the ppd and ninja rosette and leaf shape phenotypes without affecting the size. Our results reveal a pivotal contribution of NINJA in leaf development, in addition to its well-studied function in jasmonate signaling, and imply a new function for D3-type cyclins in, at least partially, uncoupling the size and shape phenotypes of ppd leaves.
Collapse
Affiliation(s)
- Alexandra Baekelandt
- Ghent University, Department of Plant Biotechnology and Bioinformatics, B-9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, B-9052 Ghent, Belgium
| | - Laurens Pauwels
- Ghent University, Department of Plant Biotechnology and Bioinformatics, B-9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, B-9052 Ghent, Belgium
| | - Zhibiao Wang
- State Key Laboratory of Plant Cell and Chromosome Engineering, CAS Center for Excellence in Molecular Plant Sciences, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
- University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Na Li
- State Key Laboratory of Plant Cell and Chromosome Engineering, CAS Center for Excellence in Molecular Plant Sciences, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Liesbeth De Milde
- Ghent University, Department of Plant Biotechnology and Bioinformatics, B-9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, B-9052 Ghent, Belgium
| | - Annelore Natran
- Ghent University, Department of Plant Biotechnology and Bioinformatics, B-9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, B-9052 Ghent, Belgium
| | - Mattias Vermeersch
- Ghent University, Department of Plant Biotechnology and Bioinformatics, B-9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, B-9052 Ghent, Belgium
| | - Yunhai Li
- State Key Laboratory of Plant Cell and Chromosome Engineering, CAS Center for Excellence in Molecular Plant Sciences, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
- University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Alain Goossens
- Ghent University, Department of Plant Biotechnology and Bioinformatics, B-9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, B-9052 Ghent, Belgium
| | - Dirk Inzé
- Ghent University, Department of Plant Biotechnology and Bioinformatics, B-9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, B-9052 Ghent, Belgium
| | - Nathalie Gonzalez
- Ghent University, Department of Plant Biotechnology and Bioinformatics, B-9052 Ghent, Belgium
- VIB Center for Plant Systems Biology, B-9052 Ghent, Belgium
| |
Collapse
|
13
|
Zhang Y, Giacchetti S, Parouchev A, Hadadi E, Li X, Dallmann R, Xandri-Monje H, Portier L, Adam R, Lévi F, Dulong S, Chang Y. Dosing time dependent in vitro pharmacodynamics of Everolimus despite a defective circadian clock. Cell Cycle 2018; 17:33-42. [PMID: 29099263 PMCID: PMC5815427 DOI: 10.1080/15384101.2017.1387695] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 09/27/2017] [Accepted: 09/29/2017] [Indexed: 12/31/2022] Open
Abstract
Everolimus (EV), a rapamycin analogue mTOR inhibitor, is used in the clinic to treat Estrogen positive (ER+) breast cancer in order to avoid the resistance to hormonotherapy. Here, we investigated whether EV efficacy varied according to administration timing by using the ER+ breast cancer cell line MCF-7 as model system. Our results showed that instead of apoptosis, EV induced a G0/G1 phase blockage of MCF-7 cells. Following serum shock, MCF-7 cells displayed a statistically significant 24h rhythm of mammalian target of Rapamycin (mTOR) activity, but perturbed circadian clock genes oscillations. Interestingly, the different delivery schedule of EV presented different efficacy in G0/G1 phase blockage in serum shocked MCF-7 cells. Moreover, serum shock induced also a circadian-like oscillation in expression or activity of several important G1 phase progression proteins, such as Cyclin D1 and phosphorylated Retinoblastoma protein (RB). Inhibition mTOR activity by EV reduced Cyclin D1 and Cyclin D3 protein level as well as RB phosphorylation level. Taken together, the results indicated that serum shock synchronization induced a circadian oscillation in mTOR activity in MCF-7 cells, which rhythmically regulated the synthesis or phosphorylation of key G1 progression proteins, such as Cyclin D1 and phosphorylated RB, ultimately resulting in different G0/G1 blockage efficiency according to different EV administration timing.
Collapse
Affiliation(s)
- Yuan Zhang
- INSERM, UMR935 Modèles de cellules souches malignes et thérapeutiques, Villejuif, Val-de-Marne, France
- Université Paris-Sud, Orsay, Essonne, France
| | - Sylvie Giacchetti
- INSERM, UMR935 Modèles de cellules souches malignes et thérapeutiques, Villejuif, Val-de-Marne, France
- Centre des Maladies du Sein, Hôpital Saint-Louis AP-HP, Paris, France
| | | | - Eva Hadadi
- INSERM, UMR935 Modèles de cellules souches malignes et thérapeutiques, Villejuif, Val-de-Marne, France
- Université Paris-Sud, Orsay, Essonne, France
| | - Xiaomei Li
- INSERM, UMR935 Modèles de cellules souches malignes et thérapeutiques, Villejuif, Val-de-Marne, France
- Université Paris-Sud, Orsay, Essonne, France
| | - Robert Dallmann
- Division of Biomedical Sciences and Zeeman Institute: SBIDER, Warwick Medical School, University of Warwick, CV4 7AL Coventry, UK
| | - Helena Xandri-Monje
- Division of Biomedical Sciences and Zeeman Institute: SBIDER, Warwick Medical School, University of Warwick, CV4 7AL Coventry, UK
| | - Lucie Portier
- INSERM, UMR935 Modèles de cellules souches malignes et thérapeutiques, Villejuif, Val-de-Marne, France
- Université Paris-Sud, Orsay, Essonne, France
| | - René Adam
- INSERM, UMR935 Modèles de cellules souches malignes et thérapeutiques, Villejuif, Val-de-Marne, France
- Université Paris-Sud, Orsay, Essonne, France
- Hôpital Paul Brousse AP-HP, Villejuif, Val-de-Marne, France
| | - Françis Lévi
- INSERM, UMR935 Modèles de cellules souches malignes et thérapeutiques, Villejuif, Val-de-Marne, France
- Université Paris-Sud, Orsay, Essonne, France
- Hôpital Paul Brousse AP-HP, Villejuif, Val-de-Marne, France
- Division of Biomedical Sciences and Zeeman Institute: SBIDER, Warwick Medical School, University of Warwick, CV4 7AL Coventry, UK
| | - Sandrine Dulong
- INSERM, UMR935 Modèles de cellules souches malignes et thérapeutiques, Villejuif, Val-de-Marne, France
- Université Paris-Sud, Orsay, Essonne, France
| | - Yunhua Chang
- INSERM, UMR935 Modèles de cellules souches malignes et thérapeutiques, Villejuif, Val-de-Marne, France
- Université Paris-Sud, Orsay, Essonne, France
| |
Collapse
|
14
|
Ramazzotti G, Faenza I, Fiume R, Billi AM, Manzoli L, Mongiorgi S, Ratti S, McCubrey JA, Suh PG, Cocco L, Follo MY. PLC-β1 and cell differentiation: An insight into myogenesis and osteogenesis. Adv Biol Regul 2017; 63:1-5. [PMID: 27776973 DOI: 10.1016/j.jbior.2016.10.005] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Accepted: 10/12/2016] [Indexed: 06/06/2023]
Abstract
Phosphoinositide-phospholipase C-β1 (PLC-β1) plays a crucial role in the initiation of the genetic program responsible for muscle differentiation and osteogenesis. During myogenic differentiation of murine C2C12 myoblasts, PLC-β1 signaling pathway involves the Inositol Polyphosphate Multikinase (IPMK) and β-catenin as downstream effectors. By means of c-jun binding to cyclin D3 promoter, the activation of PLC-β1 pathway determines cyclin D3 accumulation. However, osteogenesis requires PLC-β1 expression and up-regulation but it does not affect cyclin D3 levels, suggesting that the two processes require the activation of different mediators.
Collapse
Affiliation(s)
- Giulia Ramazzotti
- Cellular Signalling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy.
| | - Irene Faenza
- Cellular Signalling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Roberta Fiume
- Cellular Signalling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Anna Maria Billi
- Cellular Signalling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Lucia Manzoli
- Cellular Signalling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Sara Mongiorgi
- Cellular Signalling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Stefano Ratti
- Cellular Signalling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - James A McCubrey
- Department of Microbiology and Immunology, Brody School of Medicine at East Carolina University, Greenville, NC, USA
| | - Pann-Ghill Suh
- Department of Biological Sciences, School of Life Sciences, Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea
| | - Lucio Cocco
- Cellular Signalling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Matilde Y Follo
- Cellular Signalling Laboratory, Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| |
Collapse
|
15
|
Mastorci K, Muraro E, Pasini E, Furlan C, Sigalotti L, Cinco M, Dolcetti R, Fratta E. Toll-Like Receptor 1/2 and 5 Ligands Enhance the Expression of Cyclin D1 and D3 and Induce Proliferation in Mantle Cell Lymphoma. PLoS One 2016; 11:e0153823. [PMID: 27123851 PMCID: PMC4849792 DOI: 10.1371/journal.pone.0153823] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Accepted: 04/04/2016] [Indexed: 12/28/2022] Open
Abstract
Mantle cell lymphoma (MCL) is an aggressive B-cell non-Hodgkin’s lymphoma with a still undefined etiology. Several lines of evidence are consistent with the possible involvement of peculiar microenvironmental stimuli sustaining tumor cell growth and survival, as the activation of Toll-like receptors (TLR) 4 and 9. However, little is known about the contribution of other TLRs of pathogenic relevance in the development of MCL. This study reports evidence that MCL cell lines and primary MCL cells express different levels of TLR2 and TLR5, and that their triggering is able to further activate the Akt, MAPK, and NF-κB signaling cascades, known to be altered in MCL cells. This leads to the enhancement of cyclin D1 and D3 over-expression, occurring at post-translational level through a mechanism that likely involves the Akt/GSK-3α/β pathway. Interestingly, in primary B cells, TLR1/2 or TLR5 ligands increase protein level of cyclin D1, which is not usually expressed in normal B cells, and cyclin D3 when associated with CD40 ligand (CD40L), IL-4, and anti-human-IgM co-stimulus. Finally, the activation of TLR1/2 and TLR5 results in an increased proliferation of MCL cell lines and, in the presence of co-stimulation with CD40L, IL-4, and anti-human-IgM also of primary MCL cells and normal B lymphocytes. These effects befall together with an enhanced IL-6 production in primary cultures. Overall, our findings suggest that ligands for TLR1/2 or TLR5 may provide critical stimuli able to sustain the growth and the malignant phenotype of MCL cells. Further studies aimed at identifying the natural source of these TLR ligands and their possible pathogenic association with MCL are warranted in order to better understand MCL development, but also to define new therapeutic targets for counteracting the tumor promoting effects of lymphoma microenvironment.
Collapse
Affiliation(s)
- Katy Mastorci
- Cancer Bio-Immunotherapy Unit, Department of Translational Research, Centro di Riferimento Oncologico, IRCCS—National Cancer Institute, Aviano (PN), Italy
| | - Elena Muraro
- Cancer Bio-Immunotherapy Unit, Department of Translational Research, Centro di Riferimento Oncologico, IRCCS—National Cancer Institute, Aviano (PN), Italy
- * E-mail:
| | - Elisa Pasini
- Cancer Bio-Immunotherapy Unit, Department of Translational Research, Centro di Riferimento Oncologico, IRCCS—National Cancer Institute, Aviano (PN), Italy
- Princess Margaret Cancer Centre, University Health Network and TECHNA Institute for the Advancement of Technology for Health, TMDT, Room 11–314, 101 College Street, Toronto, ON M5G 1L7, Canada
| | - Chiara Furlan
- Cancer Bio-Immunotherapy Unit, Department of Translational Research, Centro di Riferimento Oncologico, IRCCS—National Cancer Institute, Aviano (PN), Italy
| | - Luca Sigalotti
- Cancer Bio-Immunotherapy Unit, Department of Translational Research, Centro di Riferimento Oncologico, IRCCS—National Cancer Institute, Aviano (PN), Italy
| | - Marina Cinco
- Spirochete Laboratory, Department of Life Sciences, University of Trieste, Trieste, Italy
| | - Riccardo Dolcetti
- Cancer Bio-Immunotherapy Unit, Department of Translational Research, Centro di Riferimento Oncologico, IRCCS—National Cancer Institute, Aviano (PN), Italy
- University of Queensland Diamantina Institute, Translational Research Institute, Brisbane, Australia
| | - Elisabetta Fratta
- Cancer Bio-Immunotherapy Unit, Department of Translational Research, Centro di Riferimento Oncologico, IRCCS—National Cancer Institute, Aviano (PN), Italy
- * E-mail:
| |
Collapse
|
16
|
Cocco L, Manzoli L, Faenza I, Ramazzotti G, Yang YR, McCubrey JA, Suh PG, Follo MY. Modulation of nuclear PI-PLCbeta1 during cell differentiation. Adv Biol Regul 2016; 60:1-5. [PMID: 26525203 DOI: 10.1016/j.jbior.2015.10.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Accepted: 10/21/2015] [Indexed: 06/05/2023]
Abstract
PI-PLCbeta1 plays an important role in cell differentiation, and particularly in myogenesis, osteogenesis and hematopoiesis. Indeed, the increase of PI-PLCbeta1, along with Cyclin D3, has been detected in C2C12 mouse myoblasts induced to differentiate, as well as in human cells obtained from myotonic dystrophy. Also in the case of osteogenic differentiation there is a specific induction of PI-PLCbeta1, but in this case the role of PI-PLCbeta1 seems to be independent from Cyclin D3, so that a different mechanism could be involved. As for the hematopoietic system, PI-PLCbeta1 has a peculiar behavior: it increases during myeloid differentiation and decreases during erythroid differentiation, thus confirming the role of PI-PLCbeta1 as a modulator of hematopoiesis.
Collapse
Affiliation(s)
- Lucio Cocco
- Department of Biomedical and Neuromotor Sciences, Cellular Signalling Laboratory, University of Bologna, Bologna, Italy
| | - Lucia Manzoli
- Department of Biomedical and Neuromotor Sciences, Cellular Signalling Laboratory, University of Bologna, Bologna, Italy
| | - Irene Faenza
- Department of Biomedical and Neuromotor Sciences, Cellular Signalling Laboratory, University of Bologna, Bologna, Italy
| | - Giulia Ramazzotti
- Department of Biomedical and Neuromotor Sciences, Cellular Signalling Laboratory, University of Bologna, Bologna, Italy
| | - Yong Ryoul Yang
- School of Life Sciences, Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea
| | - James A McCubrey
- Department of Microbiology and Immunology, Brody School of Medicine at East Carolina University, Greenville, NC, USA
| | - Pann-Ghill Suh
- School of Life Sciences, Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea
| | - Matilde Y Follo
- Department of Biomedical and Neuromotor Sciences, Cellular Signalling Laboratory, University of Bologna, Bologna, Italy.
| |
Collapse
|
17
|
Saker Z, Tsintsadze O, Jiqia I, Managadze L, Chkhotua A. IMPORTANCE OF APOPTOSIS MARKERS (MDM2, BCL-2 AND Bax) IN BENIGN PROSTATIC HYPERPLASIA AND PROSTATE CANCER. Georgian Med News 2015:7-14. [PMID: 26719543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
MDM2, Bcl-2 and Bax are well recognized markers of apoptosis. The goal of the current study was evaluation of the activity of these markers in different cells of BPH, PCa and hormonally treated prostate cancer (CRPCa) tissues. Activity of the markers has been evaluated in: 39 BPH, 28 prostate cancer (PCa) and 10 castration resistant PCa (CRPCa) tissues. Possible association of intensity of the expression with the disease clinical parameters has been assessed. Activity of MDM2 was higher in PCa and CRPCa as compared with BPH. This difference has been detected in epithelial and vascular prostatic cells. Epithelial activity of Bcl-2 was significantly lower in BPH as compared with PCa and CRPCa. Conversely, intensity of pro-apoptotic protein Bax was significantly higher in PBH than in PCa and CRPCa. The Bax activity in acinar and ductal cells of BPH was positively correlated with age. Intensity of Bcl-2 was significantly increasing, while activity of Bax was decreasing with increasing prostate volume. Significant correlation has been detected with the markers' activity and residual urine. In particular, MDM2 activity was increasing while epithelial activity of Bax was decreasing with increasing residual urine. Serum PSA level was positively correlated with MDM2 and negatively correlated with Bax activity. p27(Kip1) cell cycle inhibitor was positively correlated with Bax but negatively correlated with Bcl-2 activities. Proliferation marker Ki67 was positively correlated with MDM2 and Bcl-2. With increasing Ki67, Bax activity was significantly decreasing. Cyclin D3 was positively correlated with Bax. This pilot study has shown importance of apoptosis markers in BPH and PCa. It is the first study showing complex interrelation between apoptosis and cell cycle regulating proteins in BPH and PCa.
Collapse
Affiliation(s)
- Z Saker
- A. Tsulukidze National Centre of Urology, Department of Urology, Department of Pathology; Scientific and Practical Center of Clinical Pathology, Tbilisi, Georgia
| | - O Tsintsadze
- A. Tsulukidze National Centre of Urology, Department of Urology, Department of Pathology; Scientific and Practical Center of Clinical Pathology, Tbilisi, Georgia
| | - I Jiqia
- A. Tsulukidze National Centre of Urology, Department of Urology, Department of Pathology; Scientific and Practical Center of Clinical Pathology, Tbilisi, Georgia
| | - L Managadze
- A. Tsulukidze National Centre of Urology, Department of Urology, Department of Pathology; Scientific and Practical Center of Clinical Pathology, Tbilisi, Georgia
| | - A Chkhotua
- A. Tsulukidze National Centre of Urology, Department of Urology, Department of Pathology; Scientific and Practical Center of Clinical Pathology, Tbilisi, Georgia
| |
Collapse
|
18
|
Gao F, Bian F, Ma X, Kalinichenko VV, Das SK. Control of regional decidualization in implantation: Role of FoxM1 downstream of Hoxa10 and cyclin D3. Sci Rep 2015; 5:13863. [PMID: 26350477 PMCID: PMC4563553 DOI: 10.1038/srep13863] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Accepted: 08/07/2015] [Indexed: 02/07/2023] Open
Abstract
Appropriate regulation of regional uterine stromal cell decidualization in implantation, at the mesometrial triangle and secondary decidual zone (SDZ) locations, is critical for successful pregnancy, although the regulatory mechanisms remain poorly understood. In this regard, the available animal models that would specifically allow mechanistic analysis of site-specific decidualization are strikingly limited. Our study found that heightened expression of FoxM1, a Forkhead box transcription factor, is regulated during decidualization, and its conditional deletion in mice reveals failure of implantation with regional decidualization defects such as a much smaller mesometrial decidua with enlarged SDZ. Analysis of cell cycle progression during decidualization both in vivo and in vitro demonstrates that the loss of FoxM1 elicits diploid cell deficiency with enhanced arrests prior to mitosis and concomitant upregulation of polyploidy. We further showed that Hoxa10 and cyclin D3, two decidual markers, control transcriptional regulation and intra-nuclear protein translocation of FoxM1 in polyploid cells, respectively. Overall, we suggest that proper regional decidualization and polyploidy development requires FoxM1 signaling downstream of Hoxa10 and cyclin D3.
Collapse
Affiliation(s)
- Fei Gao
- Division of Reproductive Sciences, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
- Perinatal Institute, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
| | - Fenghua Bian
- Division of Reproductive Sciences, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
- Perinatal Institute, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
| | - Xinghong Ma
- Division of Reproductive Sciences, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
- Perinatal Institute, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
- College of Life Science, Northeast Agricultural University, Harbin, China
| | - Vladimir V. Kalinichenko
- Perinatal Institute, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
- Division of Pulmonary Biology, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
| | - Sanjoy K. Das
- Division of Reproductive Sciences, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
- Perinatal Institute, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH 45229, USA
| |
Collapse
|
19
|
Taniguchi K, Russell MA, Richardson SJ, Morgan NG. The subcellular distribution of cyclin-D1 and cyclin-D3 within human islet cells varies according to the status of the pancreas donor. Diabetologia 2015; 58:2056-63. [PMID: 26055066 DOI: 10.1007/s00125-015-3645-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Accepted: 05/15/2015] [Indexed: 12/26/2022]
Abstract
AIMS/HYPOTHESIS In humans, the rate of beta cell proliferation declines rapidly during the postnatal period and remains low throughout adult life. Recent studies suggest that this may reflect the distribution of cell cycle regulators which, unusually, are located in the cytosolic compartment of beta cells in islets isolated from adults. In the present work, we examined whether the localisation of cyclin-D molecules is also cytosolic in the islet cells of pancreatic samples studied in situ. METHODS Immunohistochemical approaches were employed to examine the subcellular localisation of cyclin-D1, -D2 and -D3 in human pancreatic samples recovered either from heart-beating donors or post mortem. Immunofluorescence methods were used to reveal the cellular localisation of cyclin-D1 and -D3. RESULTS The distribution of cyclin-D2 was invariably cytosolic in islet cells, whereas the localisation of cyclin-D1 and -D3 varied according to the status of the donor. In pancreatic sections from heart-beating donors these molecules were primarily nuclear. By contrast, in samples collected post mortem, they were mainly cytosolic. Cyclin-D1 was detected only in beta cells whereas cyclin-D3 was detected in both alpha and beta cells. The proportion of donors who were immunopositive for cyclin-D1 declined from 71% in controls to 30% in those with type 1 diabetes. Cyclin-D3 was present in the islets of the majority of donors in both groups. CONCLUSIONS/INTERPRETATION The subcellular localisation of cyclin-D molecules varies according to the status of the donor. Both cyclin-D1 and -D3 can be found in the nuclei of human islet cells in situ.
Collapse
Affiliation(s)
- Kazuto Taniguchi
- Institute of Biomedical & Clinical Science, University of Exeter Medical School, RILD Building, Barrack Road, Exeter, EX2 5DW, UK
| | | | | | | |
Collapse
|
20
|
Wang F, Wu Y, Quon MJ, Li X, Yang P. ASK1 mediates the teratogenicity of diabetes in the developing heart by inducing ER stress and inhibiting critical factors essential for cardiac development. Am J Physiol Endocrinol Metab 2015; 309:E487-99. [PMID: 26173459 PMCID: PMC4556884 DOI: 10.1152/ajpendo.00121.2015] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Accepted: 07/13/2015] [Indexed: 12/30/2022]
Abstract
Maternal diabetes in mice induces heart defects similar to those observed in human diabetic pregnancies. Diabetes enhances apoptosis and suppresses cell proliferation in the developing heart, yet the underlying mechanism remains elusive. Apoptosis signal-regulating kinase 1 (ASK1) activates the proapoptotic c-Jun NH2-terminal kinase 1/2 (JNK1/2) leading to apoptosis, suggesting a possible role of ASK1 in diabetes-induced heart defects. We aimed to investigate whether ASK1 is activated in the heart and whether deleting the Ask1 gene blocks diabetes-induced adverse events and heart defect formation. The ASK1-JNK1/2 pathway was activated by diabetes. Deleting Ask1 gene significantly reduced the rate of heart defects, including ventricular septal defects (VSDs) and persistent truncus arteriosus (PTA). Additionally, Ask1 deletion diminished diabetes-induced JNK1/2 phosphorylation and its downstream transcription factors and endoplasmic reticulum (ER) stress markers. Consistent with this, caspase activation and apoptosis were blunted. Ask1 deletion blocked the increase in cell cycle inhibitors (p21 and p27) and the decrease in cyclin D1 and D3 and reversed diabetes-repressed cell proliferation. Ask1 deletion also restored the expression of BMP4, NKX2.5, and GATA5, Smad1/5/8 phosphorylation, whose mutations or deletion result in reduced cell proliferation, VSD, and PTA formation. We conclude that ASK1 may mediate the teratogenicity of diabetes through activating the JNK1/2-ER stress pathway and inhibiting cell cycle progression, thereby impeding the cardiogenesis pathways essential for ventricular septation and outflow tract development.
Collapse
MESH Headings
- Animals
- Apoptosis/genetics
- Bone Morphogenetic Protein 4/metabolism
- Cell Proliferation
- Cyclin D1/metabolism
- Cyclin D3/metabolism
- Cyclin-Dependent Kinase Inhibitor p21/metabolism
- Cyclin-Dependent Kinase Inhibitor p27/metabolism
- Endoplasmic Reticulum Stress/genetics
- Female
- GATA5 Transcription Factor/metabolism
- Heart/embryology
- Heart Defects, Congenital/etiology
- Heart Defects, Congenital/genetics
- Heart Defects, Congenital/metabolism
- Heart Septal Defects, Ventricular/etiology
- Heart Septal Defects, Ventricular/genetics
- Heart Septal Defects, Ventricular/metabolism
- Homeobox Protein Nkx-2.5
- Homeodomain Proteins/metabolism
- MAP Kinase Kinase Kinase 5/genetics
- Mice
- Mice, Knockout
- Mitogen-Activated Protein Kinase 8/metabolism
- Mitogen-Activated Protein Kinase 9/metabolism
- Phosphorylation
- Pregnancy
- Pregnancy in Diabetics/genetics
- Pregnancy in Diabetics/metabolism
- Signal Transduction
- Smad1 Protein/metabolism
- Smad5 Protein/metabolism
- Smad8 Protein/metabolism
- Teratogenesis/genetics
- Transcription Factors/metabolism
- Truncus Arteriosus, Persistent/etiology
- Truncus Arteriosus, Persistent/genetics
- Truncus Arteriosus, Persistent/metabolism
Collapse
Affiliation(s)
- Fang Wang
- Department of Obstetrics, Gynecology, and Reproductive Sciences
| | - Yanqing Wu
- Department of Obstetrics, Gynecology, and Reproductive Sciences
| | | | - Xuezheng Li
- Department of Obstetrics, Gynecology, and Reproductive Sciences
| | - Peixin Yang
- Department of Obstetrics, Gynecology, and Reproductive Sciences, Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, Maryland
| |
Collapse
|
21
|
Gonzalez N, Pauwels L, Baekelandt A, De Milde L, Van Leene J, Besbrugge N, Heyndrickx KS, Cuéllar Pérez A, Durand AN, De Clercq R, Van De Slijke E, Vanden Bossche R, Eeckhout D, Gevaert K, Vandepoele K, De Jaeger G, Goossens A, Inzé D. A Repressor Protein Complex Regulates Leaf Growth in Arabidopsis. Plant Cell 2015; 27:2273-87. [PMID: 26232487 PMCID: PMC4568497 DOI: 10.1105/tpc.15.00006] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Revised: 06/15/2015] [Accepted: 07/16/2015] [Indexed: 05/18/2023]
Abstract
Cell number is an important determinant of final organ size. In the leaf, a large proportion of cells are derived from the stomatal lineage. Meristemoids, which are stem cell-like precursor cells, undergo asymmetric divisions, generating several pavement cells adjacent to the two guard cells. However, the mechanism controlling the asymmetric divisions of these stem cells prior to differentiation is not well understood. Here, we characterized PEAPOD (PPD) proteins, the only transcriptional regulators known to negatively regulate meristemoid division. PPD proteins interact with KIX8 and KIX9, which act as adaptor proteins for the corepressor TOPLESS. D3-type cyclin encoding genes were identified among direct targets of PPD2, being negatively regulated by PPDs and KIX8/9. Accordingly, kix8 kix9 mutants phenocopied PPD loss-of-function producing larger leaves resulting from increased meristemoid amplifying divisions. The identified conserved complex might be specific for leaf growth in the second dimension, since it is not present in Poaceae (grasses), which also lack the developmental program it controls.
Collapse
Affiliation(s)
- Nathalie Gonzalez
- Department of Plant Systems Biology, Vlaams Instituut voor Biotechnologie (VIB), 9052 Ghent, Belgium Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
| | - Laurens Pauwels
- Department of Plant Systems Biology, Vlaams Instituut voor Biotechnologie (VIB), 9052 Ghent, Belgium Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
| | - Alexandra Baekelandt
- Department of Plant Systems Biology, Vlaams Instituut voor Biotechnologie (VIB), 9052 Ghent, Belgium Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
| | - Liesbeth De Milde
- Department of Plant Systems Biology, Vlaams Instituut voor Biotechnologie (VIB), 9052 Ghent, Belgium Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
| | - Jelle Van Leene
- Department of Plant Systems Biology, Vlaams Instituut voor Biotechnologie (VIB), 9052 Ghent, Belgium Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
| | - Nienke Besbrugge
- Department of Plant Systems Biology, Vlaams Instituut voor Biotechnologie (VIB), 9052 Ghent, Belgium Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
| | - Ken S Heyndrickx
- Department of Plant Systems Biology, Vlaams Instituut voor Biotechnologie (VIB), 9052 Ghent, Belgium Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
| | - Amparo Cuéllar Pérez
- Department of Plant Systems Biology, Vlaams Instituut voor Biotechnologie (VIB), 9052 Ghent, Belgium Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
| | - Astrid Nagels Durand
- Department of Plant Systems Biology, Vlaams Instituut voor Biotechnologie (VIB), 9052 Ghent, Belgium Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
| | - Rebecca De Clercq
- Department of Plant Systems Biology, Vlaams Instituut voor Biotechnologie (VIB), 9052 Ghent, Belgium Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
| | - Eveline Van De Slijke
- Department of Plant Systems Biology, Vlaams Instituut voor Biotechnologie (VIB), 9052 Ghent, Belgium Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
| | - Robin Vanden Bossche
- Department of Plant Systems Biology, Vlaams Instituut voor Biotechnologie (VIB), 9052 Ghent, Belgium Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
| | - Dominique Eeckhout
- Department of Plant Systems Biology, Vlaams Instituut voor Biotechnologie (VIB), 9052 Ghent, Belgium Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
| | - Kris Gevaert
- Department of Medical Protein Research and Biochemistry, VIB, 9000 Ghent, Belgium Department of Biochemistry, Ghent University, 9000 Ghent, Belgium
| | - Klaas Vandepoele
- Department of Plant Systems Biology, Vlaams Instituut voor Biotechnologie (VIB), 9052 Ghent, Belgium Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
| | - Geert De Jaeger
- Department of Plant Systems Biology, Vlaams Instituut voor Biotechnologie (VIB), 9052 Ghent, Belgium Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
| | - Alain Goossens
- Department of Plant Systems Biology, Vlaams Instituut voor Biotechnologie (VIB), 9052 Ghent, Belgium Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
| | - Dirk Inzé
- Department of Plant Systems Biology, Vlaams Instituut voor Biotechnologie (VIB), 9052 Ghent, Belgium Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
| |
Collapse
|
22
|
Thompson BJ, Bhansali R, Diebold L, Cook DE, Stolzenburg L, Casagrande AS, Besson T, Leblond B, Désiré L, Malinge S, Crispino JD. DYRK1A controls the transition from proliferation to quiescence during lymphoid development by destabilizing Cyclin D3. J Exp Med 2015; 212:953-70. [PMID: 26008897 PMCID: PMC4451127 DOI: 10.1084/jem.20150002] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2015] [Accepted: 04/29/2015] [Indexed: 11/16/2022] Open
Abstract
Pre-B and pre-T lymphocytes must orchestrate a transition from a highly proliferative state to a quiescent one during development. Cyclin D3 is essential for these cells' proliferation, but little is known about its posttranslational regulation at this stage. Here, we show that the dual specificity tyrosine-regulated kinase 1A (DYRK1A) restrains Cyclin D3 protein levels by phosphorylating T283 to induce its degradation. Loss of DYRK1A activity, via genetic inactivation or pharmacologic inhibition in mice, caused accumulation of Cyclin D3 protein, incomplete repression of E2F-mediated gene transcription, and failure to properly couple cell cycle exit with differentiation. Expression of a nonphosphorylatable Cyclin D3 T283A mutant recapitulated these defects, whereas inhibition of Cyclin D:CDK4/6 mitigated the effects of DYRK1A inhibition or loss. These data uncover a previously unknown role for DYRK1A in lymphopoiesis, and demonstrate how Cyclin D3 protein stability is negatively regulated during exit from the proliferative phases of B and T cell development.
Collapse
Affiliation(s)
| | - Rahul Bhansali
- Division of Hematology/Oncology, Northwestern University, Chicago, IL 60208
| | - Lauren Diebold
- Division of Hematology/Oncology, Northwestern University, Chicago, IL 60208
| | - Daniel E Cook
- Division of Hematology/Oncology, Northwestern University, Chicago, IL 60208
| | | | | | - Thierry Besson
- Normandie Université, COBRA, UMR 6014 and FR 3038; Université Rouen; INSA Rouen; Centre National de la Recherche Scientifique, Bâtiment IRCOF, 76821 Mont St. Aignan, France
| | | | | | | | - John D Crispino
- Division of Hematology/Oncology, Northwestern University, Chicago, IL 60208
| |
Collapse
|
23
|
Abstract
Tolvaptan, a vasopressin receptor 2 antagonist used to treat hyponatremia, has recently been reported to be associated with an increased risk of liver injury. In this study, we explored the underlying mechanisms of hepatotoxicity of tolvaptan using human HepG2 cells. Tolvaptan inhibited cell growth and caused cell death in a concentration- and time-dependent manner. Tolvaptan treatment led to delayed cell cycle progression, accompanied by decreased levels of several cyclins and cyclin-dependent kinases. Tolvaptan was found to cause DNA damage, as assessed by alkaline comet assays; this was confirmed by increased levels of 8-oxoguanine and phosphorylation of histone H2AX. Exposure of HepG2 cells to tolvaptan enhanced cytochrome C release and triggered apoptosis by modulating Bcl-2 family members. The activation of p38 contributed to tolvaptan-mediated apoptosis via down-regulation of Bcl-2. Proteasome inhibition altered tolvaptan-induced cell cycle deregulation and enhanced tolvaptan-induced apoptosis and cytotoxicity. Moreover, tolvaptan treatment induced autophagy. Inhibition of autophagy by knocking-down an autophagy-related gene increased tolvaptan-induced apoptosis and cytotoxicity. Taken together, our findings suggest that the cytotoxicity of tolvaptan results from delayed cell cycle progression, the induction of DNA damage, and the execution of apoptosis. In addition, a number of signaling pathways were perturbed by tolvaptan and played an important role in its cytotoxicity.
Collapse
Affiliation(s)
- Yuanfeng Wu
- Division of Biochemical Toxicology, National Center for Toxicological Research, Food and Drug Administration, Jefferson, AR 72079, USA
| | - Frederick A Beland
- Division of Biochemical Toxicology, National Center for Toxicological Research, Food and Drug Administration, Jefferson, AR 72079, USA
| | - Si Chen
- Division of Biochemical Toxicology, National Center for Toxicological Research, Food and Drug Administration, Jefferson, AR 72079, USA
| | - Fang Liu
- Division of Neurotoxicology, National Center for Toxicological Research, Food and Drug Administration, Jefferson, AR 72079, USA
| | - Lei Guo
- Division of Biochemical Toxicology, National Center for Toxicological Research, Food and Drug Administration, Jefferson, AR 72079, USA
| | - Jia-Long Fang
- Division of Biochemical Toxicology, National Center for Toxicological Research, Food and Drug Administration, Jefferson, AR 72079, USA.
| |
Collapse
|
24
|
Er H, Acar N, Kipmen-Korgun D, Celik-Ozenci C, Ustunel I, Asar M, Korgun ET. Determination of PCNA, cyclin D3, p27, p57 and apoptosis rate in normal and dexamethasone-induced intrauterine growth restricted rat placentas. Acta Histochem 2015; 117:137-47. [PMID: 25596037 DOI: 10.1016/j.acthis.2014.11.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Revised: 11/24/2014] [Accepted: 11/25/2014] [Indexed: 01/07/2023]
Abstract
Intrauterine growth restriction (IUGR) is a major clinical problem, which causes perinatal morbidity and mortality. One of the reasons for IUGR is abnormal placentation. In rats, fetal-placental exposure to maternally administered glucocorticoids decreases birth weight and placental weight. Proper placental development depends on the proliferation and differentiation of trophoblasts. Our knowledge about the mitotic regulators that play key roles in synchronizing these events is limited. Also the mechanisms underlying the placental growth inhibitory effects of glucocorticoids have not been elucidated. The aim of this study was to investigate the immunolocalization, mRNA and protein levels of proliferating cell nuclear antigen (PCNA), cyclin D3, p27 and p57 in normal and dexamethasone-induced IUGR Wistar rat placentas by reverse transcriptase polymerase chain reaction (RT-PCR), immunohistochemistry and Western blot. We also compared apoptotic cell numbers at the light microscopic level via terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick end-labeling (TUNEL) and transmission electron microscopy. Glucocorticoid levels were higher in IUGR rats than in control rats after 60 and 120min of injection. We showed reduced gene and protein expressions of PCNA and cyclin D3 and increased expressions of p27 and p57 in IUGR placentas compared to control placentas. Apoptotic cell number was higher in the placentas of the IUGR group. In brief we found that maternal dexamethasone treatment led to a shift from cell proliferation to apoptosis in IUGR placentas. Dexamethasone induced placental and embryonal abnormalities which could be associated with reduced expressions of PCNA and cyclin D3, increased expressions of p27 and p57 and increased rate of apoptosis in IUGR placentas.
Collapse
Affiliation(s)
- Hakan Er
- Department of Histology and Embryology, Medical Faculty, Akdeniz University, 07070 Antalya, Turkey; Department of Biophysics, Medical Faculty, Akdeniz University, 07070 Antalya, Turkey
| | - Nuray Acar
- Department of Histology and Embryology, Medical Faculty, Akdeniz University, 07070 Antalya, Turkey
| | - Dijle Kipmen-Korgun
- Department of Biochemistry, Medical Faculty, Akdeniz University, 07070 Antalya, Turkey
| | - Ciler Celik-Ozenci
- Department of Histology and Embryology, Medical Faculty, Akdeniz University, 07070 Antalya, Turkey
| | - Ismail Ustunel
- Department of Histology and Embryology, Medical Faculty, Akdeniz University, 07070 Antalya, Turkey
| | - Mevlut Asar
- Department of Histology and Embryology, Medical Faculty, Akdeniz University, 07070 Antalya, Turkey
| | - Emin Turkay Korgun
- Department of Histology and Embryology, Medical Faculty, Akdeniz University, 07070 Antalya, Turkey.
| |
Collapse
|
25
|
Meng QB, Yu JC, Kang WM, Ma ZQ, Zhou L, Ye X, Cao ZJ, Tian SB. [Effects of eukaryotic translation initiation factor 5A2 down-regulation by small interfering RNA on aggressiveness of MKN28 human]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 2014; 36:482-7. [PMID: 25360644 DOI: 10.3881/j.issn.1000-503x.2014.05.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
OBJECTIVE To investigate the effects of eukaryotic translation initiation factor 5A2 (EIF5A2) down-regulation by small interfering RNA (siRNA) on aggressiveness of human gastric cancer cell and its potential mechanisms. METHODS The expressions of EIF5A2 in human gastric cancer cell lines (MKN28 and HGC27) and immortalized gastric mucosal epithelial cells (GES-1) were measured by real-time quantitative reverse transcription polymerase chain reaction (qRT-PCR) and Western blotting. EIF5A2 gene in MKN28 cells was silenced by RNA interference and the inhibitory effect was evaluated by both qRT-PCR and Western blotting. Cell proliferation was assessed by CCK-8 assay. Cell migration and invasion were assessed by Transwell assay. The possible downstream targets of EIF5A2, such as CyclinD1, CyclinD3, matrix metallopeptidase-9 (MMP-9), E-cadherin, vimintin, C-myc, and metastasis-associated protein 1 (MTA1) expression levels, were examined by Western blotting. RESULTS High expressions of EIF5A2 were found in MKN28 cells and human gastric adenocarcinoma tissues. Both EIF5A2 mRNA and protein expression in MKN28 cells were significantly down-regulated by siRNA#1 and siRNA#2, especially siRNA#1. Knockdown of EIF5A2 caused an apparent suppression of MKN28 cell proliferation (all P<0.01), migration (P<0.001), and invasion (P<0.001). After the knockdown of EIF5A2 in MKN28 cells, E-cadherin levels were upregulated, whereas vimentin, Cyclin D1, Cyclin D3, C-myc and MTA1 levels were downregulated. CONCLUSION Knockdown of EIF5A2 may inhibit MKN28 cell proliferation by downregulating the CyclinD1 and CyclinD3 and suppressing the cell migration and invasion by inhibiting MTA1, C-myc and epithelial-mesenchymal transition.
Collapse
Affiliation(s)
- Qing-bin Meng
- Department of General Surgery,PUMC Hospital,CAMS and PUMC,Beijing 100730,China; Department of Gastrointestinal Surgery,the First Hospital of Wuhan,Wuhan 430022,China
| | - Jian-chun Yu
- Department of General Surgery,PUMC Hospital,CAMS and PUMC,Beijing 100730,China
| | - Wei-ming Kang
- Department of General Surgery,PUMC Hospital,CAMS and PUMC,Beijing 100730,China
| | - Zhi-qiang Ma
- Department of General Surgery,PUMC Hospital,CAMS and PUMC,Beijing 100730,China
| | - Li Zhou
- Department of General Surgery,PUMC Hospital,CAMS and PUMC,Beijing 100730,China
| | - Xin Ye
- Department of General Surgery,PUMC Hospital,CAMS and PUMC,Beijing 100730,China
| | - Zhan-jiang Cao
- Department of General Surgery,PUMC Hospital,CAMS and PUMC,Beijing 100730,China
| | - Shu-bo Tian
- Department of General Surgery,PUMC Hospital,CAMS and PUMC,Beijing 100730,China
| |
Collapse
|
26
|
Zaharieva MM, Kirilov M, Chai M, Berger SM, Konstantinov S, Berger MR. Reduced expression of the retinoblastoma protein shows that the related signaling pathway is essential for mediating the antineoplastic activity of erufosine. PLoS One 2014; 9:e100950. [PMID: 24987858 PMCID: PMC4079453 DOI: 10.1371/journal.pone.0100950] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Accepted: 06/02/2014] [Indexed: 01/13/2023] Open
Abstract
Erufosine is a new antineoplastic agent of the group of alkylphosphocholines, which interferes with signal transduction and induces apoptosis in various leukemic and tumor cell lines. The present study was designed to examine for the first time the mechanism of resistance to erufosine in malignant cells with permanently reduced expression of the retinoblastoma (Rb) protein. Bearing in mind the high number of malignancies with reduced level of this tumor-suppressor, this investigation was deemed important for using erufosine, alone or in combination, in patients with compromised RB1 gene expression. For this purpose, clones of the leukemic T-cell line SKW-3 were used, which had been engineered to constantly express differently low Rb levels. The alkylphosphocholine induced apoptosis, stimulated the expression of the cyclin dependent kinase inhibitor p27Kip1 and inhibited the synthesis of cyclin D3, thereby causing a G2 phase cell cycle arrest and death of cells with wild type Rb expression. In contrast, Rb-deficiency impeded the changes induced by eru-fosine in the expression of these proteins and abrogated the induction of G2 arrest, which was correlated with reduced antiproliferative and anticlonogenic activities of the compound. In conclusion, analysis of our results showed for the first time that the Rb signaling pathway is essential for mediating the antineoplastic activity of erufosine and its efficacy in patients with malignant diseases may be predicted by determining the Rb status.
Collapse
Affiliation(s)
- Maya M. Zaharieva
- Toxicology and Chemotherapy Unit, German Cancer Research Center, Heidelberg, Germany
| | - Milen Kirilov
- Department of Molecular Biology of the Cell I, German Cancer Research Center, Heidelberg, Germany
| | - Minquang Chai
- Department of Molecular Biology of the Cell I, German Cancer Research Center, Heidelberg, Germany
| | - Stefan M. Berger
- Department of Molecular Biology, Central Institute of Mental Health, Mannheim, Germany
| | - Spiro Konstantinov
- Laboratory for Molecular Pharmacology and Experimental Chemotherapy, Department for Pharmacology, Pharmacotherapy and Toxicology, Faculty of Pharmacy, Medical University of Sofia, Sofia, Bulgaria
| | - Martin R. Berger
- Toxicology and Chemotherapy Unit, German Cancer Research Center, Heidelberg, Germany
- * E-mail:
| |
Collapse
|
27
|
Rubinfeld H, Kammer A, Cohen O, Gorshtein A, Cohen ZR, Hadani M, Werner H, Shimon I. IGF1 induces cell proliferation in human pituitary tumors - functional blockade of IGF1 receptor as a novel therapeutic approach in non-functioning tumors. Mol Cell Endocrinol 2014; 390:93-101. [PMID: 24769281 DOI: 10.1016/j.mce.2014.04.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Revised: 03/20/2014] [Accepted: 04/13/2014] [Indexed: 01/08/2023]
Abstract
Insulin-like growth factor (IGF1) and its receptor display potent proliferative and antiapoptotic activities and are considered key players in malignancy. The objective of the study was to explore the role of IGF1 and its downstream pathways in the proliferation of non-functioning pituitary tumor cells and to develop a targeted therapeutic approach for the treatment of these tumors. Cultures of human non-functioning pituitary adenomas and the non-secreting immortalized rat pituitary tumor cell line MtT/E were incubated with IGF1, IGF1 receptor inhibitor or both, and cell viability, proliferation and signaling were examined. Our results show that IGF1 elevated cell proliferation and enhanced cell cycle progression as well as the expression of cyclins D1 and D3. IGF1 also induced the phosphorylation of ERK, Akt and p70S6K. On the other hand, the selective IGF1R inhibitor NVP-AEW541 abrogated IGF1-induced cell proliferation as well as IGF1 receptor phosphorylation and downstream signaling.
Collapse
Affiliation(s)
- Hadara Rubinfeld
- Institute of Endocrinology and Felsenstein Medical Research Center, Rabin Medical Center, Petach Tikva 49100, Israel; Sackler School of Medicine, Tel-Aviv University, Tel Aviv 69978, Israel.
| | - Adi Kammer
- Institute of Endocrinology and Felsenstein Medical Research Center, Rabin Medical Center, Petach Tikva 49100, Israel; Sackler School of Medicine, Tel-Aviv University, Tel Aviv 69978, Israel
| | - Ortal Cohen
- Institute of Endocrinology and Felsenstein Medical Research Center, Rabin Medical Center, Petach Tikva 49100, Israel; Sackler School of Medicine, Tel-Aviv University, Tel Aviv 69978, Israel
| | - Alexander Gorshtein
- Institute of Endocrinology and Felsenstein Medical Research Center, Rabin Medical Center, Petach Tikva 49100, Israel; Sackler School of Medicine, Tel-Aviv University, Tel Aviv 69978, Israel
| | - Zvi R Cohen
- Sackler School of Medicine, Tel-Aviv University, Tel Aviv 69978, Israel; Department of Neurosurgery, Sheba Medical Center, Tel-Hashomer, Israel
| | - Moshe Hadani
- Sackler School of Medicine, Tel-Aviv University, Tel Aviv 69978, Israel; Department of Neurosurgery, Sheba Medical Center, Tel-Hashomer, Israel
| | - Haim Werner
- Department of Human Molecular Genetics and Biochemistry, Sackler School of Medicine, Tel Aviv University, Israel
| | - Ilan Shimon
- Institute of Endocrinology and Felsenstein Medical Research Center, Rabin Medical Center, Petach Tikva 49100, Israel; Sackler School of Medicine, Tel-Aviv University, Tel Aviv 69978, Israel
| |
Collapse
|
28
|
Yang K, Wang H, Xue S, Qu X, Zou J, Le J. Requirement for A-type cyclin-dependent kinase and cyclins for the terminal division in the stomatal lineage of Arabidopsis. J Exp Bot 2014; 65:2449-61. [PMID: 24687979 PMCID: PMC4036514 DOI: 10.1093/jxb/eru139] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The Arabidopsis stoma is a specialized epidermal valve made up of a pair of guard cells around a pore whose aperture controls gas exchange between the shoot and atmosphere. Guard cells (GCs) are produced by a symmetric division of guard mother cells (GMCs). The R2R3-MYB transcription factor FOUR LIPS (FLP) and its paralogue MYB88 restrict the division of a GMC to one. Previously, the upstream regions of several core cell cycle genes were identified as the direct targets of FLP/MYB88, including the B-type cyclin-dependent kinase CDKB1;1 and A2-type cyclin CYCA2;3. Here we show that CDKA;1 is also an immediate direct target of FLP/MYB88 through the binding to cis-regulatory elements in the CDKA;1 promoter region. CDKA;1 activity is required not only for normal GMC divisions but also for the excessive cell overproliferation in flp myb88 mutant GMCs. The impaired defects of GMC division in cdkb1;1 1;2 mutants could be partially rescued by a stage-specific expression of CDKA;1. Although targeted overexpression of CDKA;1 does not affect stomatal development, ectopic expression of the D3-type cyclin CYCD3;2 induces GC subdivision, resulting in a stoma with 3-4 GCs instead of the normal two. Co-overexpression of CDKA;1 with CYCD3;2, but not with CYCA2;3, confers a synergistic effect with respect to GC subdivision. Thus, in addition to a role in stomatal formative asymmetric divisions at early developmental stages, CDKA;1 is needed in triggering GMC symmetric divisions at the late stage of stomatal development. However, timely down-regulation of CDKA;1-CYCD3 activity is required for restriction of GC proliferation.
Collapse
Affiliation(s)
- Kezhen Yang
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, 20 Nanxincun, Beijing 100093, China
| | - Hongzhe Wang
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, 20 Nanxincun, Beijing 100093, China
| | - Shan Xue
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, 20 Nanxincun, Beijing 100093, China
| | - Xiaoxiao Qu
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, 20 Nanxincun, Beijing 100093, China
| | - Junjie Zou
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, 20 Nanxincun, Beijing 100093, China
| | - Jie Le
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, 20 Nanxincun, Beijing 100093, China
| |
Collapse
|
29
|
Ronchetti SA, Miler EA, Duvilanski BH, Cabilla JP. Cadmium mimics estrogen-driven cell proliferation and prolactin secretion from anterior pituitary cells. PLoS One 2013; 8:e81101. [PMID: 24236210 PMCID: PMC3827476 DOI: 10.1371/journal.pone.0081101] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Accepted: 10/09/2013] [Indexed: 12/21/2022] Open
Abstract
Cadmium (Cd) is a heavy metal of considerable occupational and environmental concern affecting wildlife and human health. Recent studies indicate that Cd, like other heavy metals, can mimic effects of 17β-estradiol (E2) involving E2 receptor (ER) activation. Lactotrophs, the most abundant cell type in anterior pituitary gland, are the main target of E2, which stimulates cell proliferation and increases prolactin secretion through ERα. The aim of this work was to examine whether Cd at nanomolar concentrations can induce cell proliferation and prolactin release in anterior pituitary cells in culture and whether these effects are mediated through ERs. Here we show that 10 nM Cd was able to stimulate lactotroph proliferation in anterior pituitary cell cultures from female Wistar rats and also in GH3 lactosomatotroph cell line. Proliferation of somatotrophs and gonadotrophs were not affected by Cd exposure. Cd promoted cell cycle progression by increasing cyclins D1, D3 and c-fos expression. Cd enhanced prolactin synthesis and secretion. Cd E2-like effects were blocked by the pure ERs antagonist ICI 182,780 supporting that Cd acts through ERs. Further, both Cd and E2 augmented full-length ERαexpression and its 46 kDa-splicing variant. In addition, when co-incubated Cd was shown to interact with E2 by inducing ERα mRNA expression which indicates an additive effect between them. This study shows for the first time that Cd at nanomolar concentration displays xenoestrogenic activities by inducing cell growth and stimulating prolactin secretion from anterior pituitary cells in an ERs-dependent manner. Cd acting as a potent xenoestrogen can play a key role in the aetiology of different pathologies of the anterior pituitary and in estrogen-responsive tissues which represent considerable risk to human health.
Collapse
Affiliation(s)
- Sonia A. Ronchetti
- Instituto de Investigaciones Biomédicas (UBA-CONICET), Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Eliana A. Miler
- Instituto de Investigaciones Biomédicas (UBA-CONICET), Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Beatriz H. Duvilanski
- Instituto de Investigaciones Biomédicas (UBA-CONICET), Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Jimena P. Cabilla
- Instituto de Investigaciones Biomédicas (UBA-CONICET), Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| |
Collapse
|
30
|
Soldini D, Campo E. Genetic sequencing studies in Burkitt's lymphoma: what can we learn about tumorigenesis? Expert Rev Hematol 2013; 6:219-21. [PMID: 23782073 DOI: 10.1586/ehm.13.27] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
31
|
Chen BB, Xu XP, Shen L, Han TJ, Lin ZG, Chen Z, Kang H, Huang B, Lin GW. Prognostic value of clinical characteristics and immunophenotypic biomarkers in 115 patients with primary central nervous system lymphoma. Chin Med J (Engl) 2013; 126:482-487. [PMID: 23422111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023] Open
Abstract
BACKGROUND Clinical outcome in patients with primary central nervous lymphoma (PCNSL) is variable and poorly predictable. This study investigated the association of clinical features and immune markers with prognosis of patients with PCNSL. METHODS One hundred and fifteen newly diagnosed PCNSL patients at the study institution were considered eligible for this study. Clinical characteristics and biochemical assay data were collected. Immunohistochemical staining of Cyclin D3, Cyclin E, Foxp1, and LMO2 were performed. All cases were followed-up regularly. RESULTS The common sites of involvement were frontal lobe (54.8%) and thalamus (16.5%). Diffuse large B-cell lymphoma composed of 96.5% of the cases. The median overall survival was 22 (4 - 41) months, and the 5-year survival rate was 22.8%. Age > 65 years, serum globulin > 40 g/L, large size of tumor, lymphocyte count ≥ 1 × 10(9)/L, and expression of Cyclin D3 and Cyclin E were associated with poor prognosis of PCNSL. Expressions of Foxp1, LMO2, and CD44 were not related to the survival. Expression of Cyclin E, large tumor size, and high serum globulin were independent prognostic factors for PCNSL. CONCLUSIONS PCNSL prognosis is relatively poor. Age, high tumor burden, higher lymphocyte count, expression of Cyclin D3, and Cyclin E are inferior prognostic factors for PCNSL.
Collapse
Affiliation(s)
- Bo-Bin Chen
- Department of Hematology, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai 200040, China
| | | | | | | | | | | | | | | | | |
Collapse
|
32
|
Abstract
Uterine decidualization, a crucial process for implantation, is a tightly regulated process encompassing proliferation, differentiation, and polyploidization of uterine stromal cells. Hoxa (Homeobox A)-10, a homeobox transcription factor, is highly expressed in decidualizing stromal cells. Targeted gene deletion experiments have demonstrated marked infertility resulting from severely compromised decidualization in Hoxa-10(-/-) mice. However, the underlying mechanism by which Hoxa-10 regulates stromal cell differentiation remains poorly understood. Cyclin D3, a G(1) phase cell-cycle regulatory protein involved in stromal cell proliferation and decidualization, is significantly reduced in Hoxa-10(-/-) mice. The expression of cyclin D3 in the pregnant mouse uterus parallels stromal cell decidualization. Here, we show that adenovirus-driven cyclin D3 replacement in Hoxa-10(-/-) mice improves stromal cell decidualization. To address our question of whether cyclin D3 replacement in Hoxa-10(-/-) mice can improve decidualization, both in vitro and in vivo studies were completed after the addition of cyclin D3 or empty (control) viral vectors. Immunostaining demonstrated increased proliferation and decidualization in both in vitro and in vivo studies, and in situ hybridization confirmed increased expression of decidualization markers in vivo. Placentation was demonstrated as well in vivo in the cyclin D3-replaced animals. However, fertility was not restored in Hoxa-10(-/-) mice after d 10 of pregnancy. Finally, we identified several downstream targets of cyclin D3 during decidualization in vitro via proteomics experiments, and these were confirmed using in situ hybridization in vivo. Collectively, these results demonstrate that cyclin D3 expression influences a host of genes involved in decidualization and can improve decidualization in Hoxa-10(-/-) mice.
Collapse
Affiliation(s)
- Julie M Sroga
- Obstetrics and Gynecology, University of Cincinnati, Ohio 45267, USA
| | | | | | | |
Collapse
|
33
|
Abstract
Lung adenocarcinoma (AC) is the most common histological subtype of lung cancer worldwide and its absolute incidence is increasing markedly. Transcriptional regulation is one of the most fundamental processes in lung AC development. However, high-throughput functional analyses of multiple transcription factors and their target genes in lung AC are rare. Thus, the objective of our study was to interpret the mechanisms of human AC through the regulatory network using the GSE2514 microarray data. Our results identified the genes peroxisome proliferator activated receptor-γ (PPARG), CCAAT/enhancer binding protein β (CEBPB), ets variant 4 (ETV4), Friend leukemia virus integration 1 (FLI1), T-cell acute lymphocytic leukemia 1 (TAL1) and nuclear factor of kappa light polypeptide gene enhancer in B-cells 1 (NFKB1) as hub nodes in the transcriptome network. Among these genes, it appears that: PPARG promotes the PPAR signaling pathway via the upregulation of lipoprotein lipase (LPL) expression, but suppresses the cell cycle pathway via downregulation of growth arrest and DNA-damage-inducible, γ (GADD45G) expression; ETV4 stimulates matrix metallopeptidase 9 (MMP9) expression to induce the bladder cancer pathway; FLI upregulates transforming growth factor, β receptor II (TGFBR2) expression to activate TGF-β signaling and upregulates cyclin D3 (CCND3) expression to promote the cell cycle pathway; NFKB1 upregulates interleukin 1, β (IL-1B) expression and initiates the prostate cancer pathway; CEBPB upregulates IL-6 expression and promotes pathways in cancer; and TAL1 promotes kinase insert domain receptor (KDR) expression to promote the TGF-β signaling pathway. This transcriptional regulation analysis may provide an improved understanding of the molecular mechanisms and potential therapeutic targets in the treatment of lung AC.
Collapse
Affiliation(s)
- Xiangrui Meng
- Department of Oncology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, PR China
| | | | | | | | | |
Collapse
|
34
|
Bergougnoux V, Zalabák D, Jandová M, Novák O, Wiese-Klinkenberg A, Fellner M. Effect of blue light on endogenous isopentenyladenine and endoreduplication during photomorphogenesis and de-etiolation of tomato (Solanum lycopersicum L.) seedlings. PLoS One 2012; 7:e45255. [PMID: 23049779 PMCID: PMC3458014 DOI: 10.1371/journal.pone.0045255] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2012] [Accepted: 08/14/2012] [Indexed: 01/06/2023] Open
Abstract
Light is one of the most important factor influencing plant growth and development all through their life cycle. One of the well-known light-regulated processes is de-etiolation, i.e. the switch from skotomorphogenesis to photomorphogenesis. The hormones cytokinins (CKs) play an important role during the establishment of photomorphogenesis as exogenous CKs induced photomorphogenesis of dark-grown seedlings. Most of the studies are conducted on the plant model Arabidopsis, but no or few information are available for important crop species, such as tomato (Solanum lycopersicum L.). In our study, we analyzed for the first time the endogenous CKs content in tomato hypocotyls during skotomorphogenesis, photomorphogenesis and de-etiolation. For this purpose, two tomato genotypes were used: cv. Rutgers (wild-type; WT) and its corresponding mutant (7B-1) affected in its responses to blue light (BL). Using physiological and molecular approaches, we identified that the skotomorphogenesis is characterized by an endoreduplication-mediated cell expansion, which is inhibited upon BL exposure as seen by the accumulation of trancripts encoding CycD3, key regulators of the cell cycle. Our study showed for the first time that iP (isopentenyladenine) is the CK accumulated in the tomato hypocotyl upon BL exposure, suggesting its specific role in photomorphogenesis. This result was supported by physiological experiments and gene expression data. We propose a common model to explain the role and the relationship between CKs, namely iP, and endoreduplication during de-etiolation and photomorphogenesis.
Collapse
Affiliation(s)
- Véronique Bergougnoux
- Laboratory of Growth Regulators, Faculty of Science, Palacky University and Institute of Experimental Botany A.S ČR v.v.i., Olomouc, Czech Republic
- * E-mail: (VB); (MF)
| | - David Zalabák
- Centre of the Region Haná for Biotechnological and Agricultural Research, Department of Molecular Biology, Faculty of Science, Palacky University, Olomouc, Czech Republic
| | - Michaela Jandová
- Department of Botany, Faculty of Science, Palacky University in Olomouc, Olomouc, Czech Republic
| | - Ondřej Novák
- Laboratory of Growth Regulators, Faculty of Science, Palacky University and Institute of Experimental Botany A.S ČR v.v.i., Olomouc, Czech Republic
| | - Anika Wiese-Klinkenberg
- Institute of Bio- and Geosciences, IBG-2: Plant Sciences, Forschungszentrum Jülich GmbH, Jülich, Germany
| | - Martin Fellner
- Laboratory of Growth Regulators, Faculty of Science, Palacky University and Institute of Experimental Botany A.S ČR v.v.i., Olomouc, Czech Republic
- * E-mail: (VB); (MF)
| |
Collapse
|
35
|
Bai Y, Yang W, Yang HX, Liao Q, Ye G, Fu G, Ji L, Xu P, Wang H, Li YX, Peng C, Wang YL. Downregulated miR-195 detected in preeclamptic placenta affects trophoblast cell invasion via modulating ActRIIA expression. PLoS One 2012; 7:e38875. [PMID: 22723898 PMCID: PMC3378540 DOI: 10.1371/journal.pone.0038875] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2012] [Accepted: 05/14/2012] [Indexed: 12/19/2022] Open
Abstract
Background Preeclampsia (PE) is a pregnancy-specific syndrome manifested by on-set of hypertension and proteinuria after 20 weeks of gestation. Abnormal placenta development has been generally accepted as initial cause of the disorder. Recently, miR-195 was found to be down-regulated in preeclamptic placentas compared with normal pregnant ones, indicating possible association of this small molecule with placental pathology of preeclampsia. By far the function of miR-195 in the development of placenta remains unknown. Methodology/Principal Findings Bioinformatic assay predicted ActRIIA as one of the targets for miR-195. By using Real-time PCR, Western blotting and Dual Luciferase Assay, we validated that ActRIIA was the direct target of miR-195 in human trophoblast cells. Transwell insert invasion assay showed that miR-195 could promote cell invasion in trophoblast cell line, HTR8/SVneo cells, and the effect could be abrogated by overexpressed ActRIIA. In preeclamptic placenta tissues, pri-miR-195 and mature miR-195 expressions were down-regulated, whereas ActRIIA level appeared to be increased when compared with that in gestational-week-matched normal placentas. Conclusions/Significance This is the first report on the function of miR-195 in human placental trophoblast cells which reveals an invasion-promoting effect of the small RNA via repressing ActRIIA. Aberrant expression of miR-195 may contribute to the occurrence of preeclampsia through interfering with Activin/Nodal signaling mediated by ActRIIA in human placenta.
Collapse
Affiliation(s)
- Yang Bai
- State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- Graduate School of Chinese Academy of Sciences, Beijing, China
| | - Weiwei Yang
- State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- Graduate School of Chinese Academy of Sciences, Beijing, China
| | - Hui-xia Yang
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China
| | - Qinping Liao
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China
| | - Gang Ye
- Department of Biology, York University, Toronto, Ontario, Canada
| | - Guodong Fu
- Department of Biology, York University, Toronto, Ontario, Canada
| | - Lei Ji
- State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Peng Xu
- State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- Graduate School of Chinese Academy of Sciences, Beijing, China
| | - Hao Wang
- State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- Graduate School of Chinese Academy of Sciences, Beijing, China
| | - Yu-xia Li
- State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Chun Peng
- Department of Biology, York University, Toronto, Ontario, Canada
- * E-mail: (YLW); (CP)
| | - Yan-ling Wang
- State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- * E-mail: (YLW); (CP)
| |
Collapse
|
36
|
Asher JM, O'Leary KA, Rugowski DE, Arendt LM, Schuler LA. Prolactin promotes mammary pathogenesis independently from cyclin D1. Am J Pathol 2012; 181:294-302. [PMID: 22658484 DOI: 10.1016/j.ajpath.2012.03.041] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2011] [Revised: 02/20/2012] [Accepted: 03/15/2012] [Indexed: 12/30/2022]
Abstract
Epidemiological and experimental studies have revealed an important role for prolactin (PRL) in breast cancer. Cyclin D1 is a major downstream target of PRL in lobuloalveolar development during pregnancy and is amplified and/or overexpressed in many breast carcinomas. To examine the importance of cyclin D1 in PRL-induced pathogenesis, we generated transgenic mice (NRL-PRL) that overexpress PRL in mammary epithelial cells, with wild-type, heterozygous, or genetically ablated cyclin D1 in the FVB/N genetic background. Although loss of one cyclin D1 allele did not affect PRL-induced mammary lesions in nonparous females, the complete absence of cyclin D1 (D1(-/-)) markedly decreased tumor incidence. Nevertheless, NRL-PRL/D1(-/-) females developed significantly more preneoplastic lesions (eg, epithelial hyperplasias and mammary intraepithelial neoplasias) than D1(-/-) females. Moreover, although lack of cyclin D1 reduced proliferation of morphologically normal mammary epithelium, transgenic PRL restored it to rates of wild-type females. PRL posttranscriptionally increased nuclear cyclin D3 protein in D1(-/-) luminal cells, indicating one compensatory mechanism. Consistently, pregnancy induced extensive lobuloalveolar growth in the absence of cyclin D1. However, transcripts for milk proteins were reduced, and pups failed to survive, suggesting that mammary differentiation was inadequate. Together, these results indicate that cyclin D1 is an important, but not essential, mediator of PRL-induced mammary proliferation and pathology in FVB/N mice and is critical for differentiation and lactation.
Collapse
Affiliation(s)
- Jennifer M Asher
- Department of Comparative Biosciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI 53706, USA
| | | | | | | | | |
Collapse
|
37
|
Anders L, Ke N, Hydbring P, Choi YJ, Widlund HR, Chick JM, Zhai H, Vidal M, Gygi SP, Braun P, Sicinski P. A systematic screen for CDK4/6 substrates links FOXM1 phosphorylation to senescence suppression in cancer cells. Cancer Cell 2011; 20:620-34. [PMID: 22094256 PMCID: PMC3237683 DOI: 10.1016/j.ccr.2011.10.001] [Citation(s) in RCA: 389] [Impact Index Per Article: 29.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2010] [Revised: 04/21/2011] [Accepted: 10/02/2011] [Indexed: 12/31/2022]
Abstract
Cyclin D-dependent kinases (CDK4 and CDK6) are positive regulators of cell cycle entry and they are overactive in the majority of human cancers. However, it is currently not completely understood by which cellular mechanisms CDK4/6 promote tumorigenesis, largely due to the limited number of identified substrates. Here we performed a systematic screen for substrates of cyclin D1-CDK4 and cyclin D3-CDK6. We identified the Forkhead Box M1 (FOXM1) transcription factor as a common critical phosphorylation target. CDK4/6 stabilize and activate FOXM1, thereby maintain expression of G1/S phase genes, suppress the levels of reactive oxygen species (ROS), and protect cancer cells from senescence. Melanoma cells, unlike melanocytes, are highly reliant on CDK4/6-mediated senescence suppression, which makes them particularly susceptible to CDK4/6 inhibition.
Collapse
Affiliation(s)
- Lars Anders
- Department of Cancer Biology Dana-Farber Cancer Institute, Boston, MA 02115, USA
- Department of Genetics Harvard Medical School, Boston, MA 02115, USA
- Correspondence:
| | - Nan Ke
- Department of Cancer Biology Dana-Farber Cancer Institute, Boston, MA 02115, USA
- Department of Genetics Harvard Medical School, Boston, MA 02115, USA
| | - Per Hydbring
- Department of Cancer Biology Dana-Farber Cancer Institute, Boston, MA 02115, USA
- Department of Genetics Harvard Medical School, Boston, MA 02115, USA
| | - Yoon J. Choi
- Department of Cancer Biology Dana-Farber Cancer Institute, Boston, MA 02115, USA
- Department of Genetics Harvard Medical School, Boston, MA 02115, USA
| | - Hans R. Widlund
- Department of Dermatology Brigham and Women’s Hospital, Boston, MA 02115, USA
| | - Joel M. Chick
- Department of Cell Biology Harvard Medical School, Boston, MA 02115, USA
| | - Huili Zhai
- Novartis Institutes for Biomedical Research, Cambridge, MA 02139, USA
| | - Marc Vidal
- Department of Cancer Biology Dana-Farber Cancer Institute, Boston, MA 02115, USA
- Center for Cancer Systems Biology (CCSB) Dana-Farber Cancer Institute, Boston, MA 02115, USA
- Department of Genetics Harvard Medical School, Boston, MA 02115, USA
| | - Stephen P. Gygi
- Department of Cell Biology Harvard Medical School, Boston, MA 02115, USA
| | - Pascal Braun
- Department of Cancer Biology Dana-Farber Cancer Institute, Boston, MA 02115, USA
- Center for Cancer Systems Biology (CCSB) Dana-Farber Cancer Institute, Boston, MA 02115, USA
- Department of Genetics Harvard Medical School, Boston, MA 02115, USA
| | - Piotr Sicinski
- Department of Cancer Biology Dana-Farber Cancer Institute, Boston, MA 02115, USA
- Department of Genetics Harvard Medical School, Boston, MA 02115, USA
- Correspondence:
| |
Collapse
|
38
|
Marnerides A, Vassilakopoulos TP, Boltetsou E, Levidou G, Angelopoulou MK, Thymara I, Kyrtsonis MC, Pappi V, Tsopra O, Panayiotidis P, Pangalis GA, Beris P, Patsouris E, Korkolopoulou P. Immunohistochemical expression and prognostic significance of CCND3, MCM2 and MCM7 in Hodgkin lymhoma. Anticancer Res 2011; 31:3585-3594. [PMID: 21965782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
BACKGROUND Increased proliferation rate may be associated with inferior outcome in patients with Hodgkin lymphoma (HL). Minichromosome maintenance proteins (MCMs) and D-type cyclins are essential for DNA replication. PATIENTS AND METHODS Lymph node sections from 138 HL patients were immunohistochemically stained for cyclin D3 (CCND3), MCM2 and MCM7 aiming to investigate clinical outcome. RESULTS Higher MCM2 expression was observed in patients in early stage disease and normal albumin levels; higher MCM7 was found for asymptomatic patients, early stage disease, <5 involved sites, no anemia and normal albumin levels; higher CCND3 expression was found for older patients and normal lactate dehydrogenase (LDH). Univariate analysis revealed no correlation with failure-free (FFS) or overall survival (OS). Multivariate analysis revealed that high MCM7 expression was an adverse prognostic factor for OS, along with older age and advanced stage, while it was of borderline significance for FFS when adjusted for stage. CONCLUSION These results suggest that MCM7 deserves further evaluation as a potential independent prognostic factor in larger patient series.
Collapse
Affiliation(s)
- Andreas Marnerides
- Department of Pathology, Laikon General Hospital, National and Kapodistrian University of Athens, Greece
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
39
|
Franck N, Montembault E, Romé P, Pascal A, Cremet JY, Giet R. CDK11(p58) is required for centriole duplication and Plk4 recruitment to mitotic centrosomes. PLoS One 2011; 6:e14600. [PMID: 21297952 PMCID: PMC3031510 DOI: 10.1371/journal.pone.0014600] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2010] [Accepted: 12/20/2010] [Indexed: 11/20/2022] Open
Abstract
Background CDK11p58 is a mitotic protein kinase, which has been shown to be required for different mitotic events such as centrosome maturation, chromatid cohesion and cytokinesis. Methodology/Principal Findings In addition to these previously described roles, our study shows that CDK11p58 inhibition induces a failure in the centriole duplication process in different human cell lines. We propose that this effect is mediated by the defective centrosomal recruitment of proteins at the onset of mitosis. Indeed, Plk4 protein kinase and the centrosomal protein Cep192, which are key components of the centriole duplication machinery, showed reduced levels at centrosomes of mitotic CDK11-depleted cells. CDK11p58, which accumulates only in the vicinity of mitotic centrosomes, directly interacts with the centriole-associated protein kinase Plk4 that regulates centriole number in cells. In addition, we show that centriole from CDK11 defective cells are not able to be over duplicated following Plk4 overexpression. Conclusion/Significance We thus propose that CDK11 is required for centriole duplication by two non-mutually-exclusive mechanisms. On one hand, the observed duplication defect could be caused indirectly by a failure of the centrosome to fully maturate during mitosis. On the other hand, CDK11p58 could also directly regulate key centriole components such as Plk4 during mitosis to trigger essential mitotic centriole modifications, required for centriole duplication during subsequent interphase.
Collapse
Affiliation(s)
- Nathalie Franck
- UMR6061-CNRS, Institut de Génétique et Développement de Rennes, Université de Rennes I, Rennes, France
| | - Emilie Montembault
- UMR6061-CNRS, Institut de Génétique et Développement de Rennes, Université de Rennes I, Rennes, France
| | - Pierre Romé
- UMR6061-CNRS, Institut de Génétique et Développement de Rennes, Université de Rennes I, Rennes, France
| | - Aude Pascal
- UMR6061-CNRS, Institut de Génétique et Développement de Rennes, Université de Rennes I, Rennes, France
| | - Jean-Yves Cremet
- UMR6061-CNRS, Institut de Génétique et Développement de Rennes, Université de Rennes I, Rennes, France
| | - Régis Giet
- UMR6061-CNRS, Institut de Génétique et Développement de Rennes, Université de Rennes I, Rennes, France
- * E-mail:
| |
Collapse
|
40
|
Köhler CU, Olewinski M, Tannapfel A, Schmidt WE, Fritsch H, Meier JJ. Cell cycle control of β-cell replication in the prenatal and postnatal human pancreas. Am J Physiol Endocrinol Metab 2011; 300:E221-30. [PMID: 20978233 DOI: 10.1152/ajpendo.00496.2010] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
β-Cell regeneration declines with aging, but the molecular mechanisms controlling β-cell replication in humans are not well understood. We compared the expression of selected cell cycle proteins in prenatal and adult tissue and examined the association of these proteins with β-cell replication. Pancreatic tissue from a total of 20 human fetuses and adults was stained for Ki67, cyclin D3, p16 and p27, and insulin. The β-cellular expression of these cell cycle proteins was determined. The frequency of β-cell replication was lower in adult compared with prenatal β-cells (<0.5 vs. 3.4 ± 0.5%, respectively; P < 0.0001). p16 was sporadically expressed in prenatal β-cells (8.0 ± 1.1%) but highly enriched in adult β-cells (63.1 ± 5.2%, P < 0.0001). Likewise, the expression of p27 was much lower in prenatal β-cells (1.7 ± 0.4 vs. 44.1 ± 5.4%, respectively, P < 0.0001), and cyclin D3 expression increased from 24.2 ± 4.1 to 47.25 ± 5.0%, respectively (P < 0.001), with aging. The expression of all three proteins was significantly correlated with each other (P < 0.01 and r > 0.75, respectively). The strong expression of cyclin D3 in adult human β-cells and its correlation to p27 and p16 suggest a positive role in human β-cell cycle regulation. p16 and p27 appear to restrict β-cell replication with aging. The age dependency of cell cycle regulation in human β-cells might explain the reduced β-cell regeneration in adult humans.
Collapse
Affiliation(s)
- Christina U Köhler
- Department of Medicine I, St. Josef-Hospital, Ruhr-University of Bochum, Gudrunstr. 56, 44791 Bochum, Germany
| | | | | | | | | | | |
Collapse
|
41
|
Lupino E, Buccinnà B, Ramondetti C, Lomartire A, De Marco G, Ricotti E, Tovo PA, Rinaudo MT, Piccinini M. In CD28-costimulated human naïve CD4+ T cells, I-κB kinase controls the expression of cell cycle regulatory proteins via interleukin-2-independent mechanisms. Immunology 2010; 131:231-41. [PMID: 20465575 PMCID: PMC2967269 DOI: 10.1111/j.1365-2567.2010.03297.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2009] [Revised: 03/03/2010] [Accepted: 03/30/2010] [Indexed: 12/14/2022] Open
Abstract
Stimulation of naïve CD4(+) T cells through engagement of the T-cell receptor (TCR) and the CD28 co-receptor initiates cell proliferation which critically depends on interleukin (IL)-2 secretion and subsequent autocrine signalling via the IL-2 receptor. However, several studies indicate that in CD28-costimulated T cells additional IL-2-independent signals are also required for cell proliferation. In this study, using a neutralizing anti-human IL-2 antibody and two selective, structurally unrelated, cell-permeable I-κB kinase (IKK) inhibitors, BMS-345541 and PS-1145, we show that in human naïve CD4(+) T cells stimulated through a short engagement of the TCR and the CD28 co-receptor, IKK controls the expression of the cell cycle regulatory proteins cyclin D3, cyclin E and cyclin-dependent kinase 2 (CDK2) and the stability of the F-box protein S-phase kinase-associated protein 2 (SKP2) and its co-factor CDC28 protein kinase regulatory subunit 1B (CKS1B), through IL-2-independent mechanisms.
Collapse
Affiliation(s)
- Elisa Lupino
- Department of Medicine and Experimental Oncology, Section of Biochemistry, University of Turin, Turin, Italy
| | | | | | | | | | | | | | | | | |
Collapse
|
42
|
Mistrik M, Bartek J. Cyclin D3-dependent kinases in lymphoma: redundancy and implications for therapy. Cell Cycle 2010; 9:446-447. [PMID: 20130452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023] Open
|
43
|
Gilmore TD, Thompson RC, Faber AC. Cyclins D3 and E go hand in hand with Cdk4/6 in diffuse large B-cell lymphoma. Cell Cycle 2010; 9:448-449. [PMID: 20130454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023] Open
|
44
|
Cao XX, Xu JD, Xu JW, Liu XL, Cheng YY, Wang WJ, Li QQ, Chen Q, Xu ZD, Liu XP. RACK1 promotes breast carcinoma proliferation and invasion/metastasis in vitro and in vivo. Breast Cancer Res Treat 2009; 123:375-86. [PMID: 19946739 DOI: 10.1007/s10549-009-0657-x] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2009] [Accepted: 11/16/2009] [Indexed: 11/25/2022]
Abstract
A yeast two-hybrid system was utilized to identify novel PI3K p110alpha-interacting proteins, of which receptor of activated protein kinase C1 (RACK1) was chosen for successive detailed analyses. Our aim was to investigate the function(s) of RACK1 and its involvement in mechanisms of breast carcinoma proliferation and invasion/metastasis. Experiments in breast carcinoma cell lines stably transfected with RACK1, as well as nude mouse models, showed that RACK1 promotes breast carcinoma proliferation and invasion/metastasis in vitro and in vivo. Conversely, knockdown of RACK1 by siRNA in vitro inhibited proliferation, migration, and invasion. In cell lines stably transfected with RACK1, p-AKT, cyclin D1, cyclin D3, and CD147 expression, as well as MMP2 activity, were elevated. RACK1-induced migration could be inhibited by the addition of Rho-kinase inhibitor. In 160 breast carcinoma cases, survival analyses established that RACK1 is an independent prognostic factor for poor outcome (P < 0.001). In conclusion, RACK1 is an independent prognosis-related factor and promotes breast carcinoma proliferation and invasion/metastasis in vitro and in vivo.
Collapse
Affiliation(s)
- Xi-Xi Cao
- Department of Pathology, Shanghai Medical College, Fudan University, 138 Yi Xue Yuan Road, Shanghai, 200032, China
| | | | | | | | | | | | | | | | | | | |
Collapse
|
45
|
Gorshtein A, Rubinfeld H, Kendler E, Theodoropoulou M, Cerovac V, Stalla GK, Cohen ZR, Hadani M, Shimon I. Mammalian target of rapamycin inhibitors rapamycin and RAD001 (everolimus) induce anti-proliferative effects in GH-secreting pituitary tumor cells in vitro. Endocr Relat Cancer 2009; 16:1017-27. [PMID: 19509067 DOI: 10.1677/erc-08-0269] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The effect of mammalian target of rapamycin (mTOR) inhibitors on pituitary tumors is unknown. Akt overexpression was demonstrated in pituitary adenomas, which may render them sensitive to the anti-proliferative effects of these drugs. The objective of the study was to evaluate the anti-proliferative efficacy of the mTOR inhibitor, rapamycin, and its orally bioavailable analog RAD001 on the GH-secreting pituitary tumor GH3 and MtT/S cells and in human GH-secreting pituitary adenomas (GH-omas) in primary cell cultures. Treatment with rapamycin or RAD001 significantly decreased the number of viable cells and cell proliferation in a dose- and time-dependent manner. This was reflected by decreased phosphorylation levels of the downstream mTOR target p70S6K. Rapamycin treatment of GH3 cells induced G0/G1 cell cycle arrest. In other tumor cell types, this was attributed to a decrease in cyclin D1 levels. However, rapamycin did not affect cyclin D1 protein levels in GH3 cells. By contrast, it decreased cyclin D3 and p21/CIP, which stabilizes cyclin D/cyclin-dependent kinase 4 (cdk4) complexes. Rapamycin inhibited FCS-induced retinoblastoma phosphorylation and subsequent E2F-transcriptional activity. In response to decreased E2F activity, the expression of the E2F-regulated genes cyclin E and cdk2 was reduced. Our results showed that mTOR inhibitors potently inhibit pituitary cell proliferation, suggesting that mTOR inhibition may be a promising anti-proliferative therapy for pituitary adenomas. This therapeutic manipulation may have beneficial effects particularly for patients harboring invasive pituitary tumors resistant to current treatments.
Collapse
Affiliation(s)
- Alexander Gorshtein
- Institute of Endocrinology and Metabolism and Felsenstein Medical Research Center, Rabin Medical Center, Beilinson Campus, Petach Tikva 49100, Israel
| | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Ge JN, Huang D, Xiao T, Wang Z, Li XL, Xiao H, Tao DD, Gong JP. [Effect of starvation-induced autophagy on cell cycle of tumor cells]. Ai Zheng 2008; 27:788-794. [PMID: 18710610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
BACKGROUND & OBJECTIVE No serum starvation could induce autophagy and cell cycle arrest. Although autophagy and cell cycle have been widely explored, little is known about their relationship. This study was to observe the change of Cyclin expression during starvation-induced autophagy to discuss the effect of autophagy on cell cycle. METHODS In control group, HeLa cells were treated with d-Hanks solution (a medium with no serum). In experiment group, HeLa cells were treated with d-Hanks solution containing 3-methyladenine (3-MA, a specific inhibitor of autophagy). Cells were harvested after being starved for 0, 3, 6 and 12 h. Flow cytometry (FCM) and Weston blot were used to detect Cyclin and microtubule-associated protein 1 light chain 3(LC-3) which marked autophagy specifically. RESULTS In control group, the expression of LC-3 protein was detected early after being starved for 3 h, and gradually increased along with starvation; the expression of Cyclin D3 and Cyclin E was decreased evidently after a short-time starvation (3 h) and descended to the minimum when cells were being starved for 6 h; the expression of Cyclin A and Cyclin B1 were apparently decreased after being starved for 6 h. In experiment group, LC-3 protein could not be detected during starvation when cells were exposed to 3-MA and the down-regulation of Cyclins was suppressed. CONCLUSIONS Autophagy is involved in starvation-induced hydrolysis of Cyclins. The hydrolysis of Cyclin D3 and Cyclin E is quicker than that of Cyclin A and Cyclin B1.
Collapse
Affiliation(s)
- Jun-Na Ge
- Department of Gastrointestinal Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, P. R. China
| | | | | | | | | | | | | | | |
Collapse
|
47
|
Chen Z, Wu QL, Chen Y, He J. [Effect of betulinic acid on proliferation and apoptosis in Jurkat cells and its mechanism]. Zhonghua Zhong Liu Za Zhi 2008; 30:588-592. [PMID: 19102935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
OBJECTIVE To investigate the anticancer effects of betulinic acid (BA) on Jurkat cells in vitro and its molecular mechanism. METHODS The effects of betulinic acid on the growth of Jurkat cells were studied by 3-(4, 5-dimethyl-2-thiazolyl)-2, 5diphenyl-2H-tetrazolium (MTT) assay. Apoptosis was assessed by Hoechst33258 staining and annexin-V/PI double-labeled cytometry. The effect of betulinic acid on the cell cycle of Jurkat cells was studied by propidium iodide staining. RT-PCR and Western blot were used to analyze the changes of cyclin D3, bcl-xl mRNA and protein levels in Jurkat cells after treatment with betulinic acid. RESULTS The proliferation of Jurkat cells was decreased in betulinic acid-treated group at a 24 h IC50 value of 70.0 micromol/L. The effect of betulinic acid to induce apoptosis in Jurkat cells was in a time- and dose-dependent manner. Jurkat cells treated with betulinic acid showed an increase of G0/G1 phase and decrease of S phase. The Jurkat cells treated with 0, 20, 60, 100 micromol/L betulinic acid for 24 h, showed an increased G0/G1 phase from 31.0% to 58.8%, whereas decreased S phase from 61.5% to 35.8%, respectively. PBMC was less sensitive to the cytotoxic effect of betulinic acid than Jurkat cells. The expression of cyclin D3, bcl-xl mRNA and protein were decreased sharply in Jurkat cells treated with betulinic acid. CONCLUSION Betulinic acid can inhibit the proliferation of Jurkat cells by regulating the cell cycle that arrests cells at G0/G1 phase and induces apoptosis in Jurkat cells. The antitumor effects of betulinic acid may be related to down-regulation of the expression of cyclin D3 and bcl-xl.
Collapse
Affiliation(s)
- Zi Chen
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | | | | | | |
Collapse
|