1
|
Wang J, Wang C, Hu A, Yu K, Kuang Y, Gajendran B, Zacksenhaus E, Sample KM, Xiao X, Liu W, Ben-David Y. FLI1 induces erythroleukemia through opposing effects on UBASH3A and UBASH3B expression. BMC Cancer 2024; 24:326. [PMID: 38461240 PMCID: PMC10925000 DOI: 10.1186/s12885-024-12075-2] [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: 07/21/2023] [Accepted: 03/01/2024] [Indexed: 03/11/2024] Open
Abstract
BACKGROUND FLI1 is an oncogenic transcription factor that promotes diverse malignancies through mechanisms that are not fully understood. Herein, FLI1 is shown to regulate the expression of Ubiquitin Associated and SH3 Domain Containing A/B (UBASH3A/B) genes. UBASH3B and UBASH3A are found to act as an oncogene and tumor suppressor, respectively, and their combined effect determines erythroleukemia progression downstream of FLI1. METHODS Promoter analysis combined with luciferase assays and chromatin immunoprecipitation (ChIP) analysis were applied on the UBASH3A/B promoters. RNAseq analysis combined with bioinformatic was used to determine the effect of knocking-down UBASH3A and UBASH3B in leukemic cells. Downstream targets of UBASH3A/B were inhibited in leukemic cells either via lentivirus-shRNAs or small molecule inhibitors. Western blotting and RT-qPCR were used to determine transcription levels, MTT assays to assess proliferation rate, and flow cytometry to examine apoptotic index. RESULTS Knockdown of FLI1 in erythroleukemic cells identified the UBASH3A/B genes as potential downstream targets. Herein, we show that FLI1 directly binds to the UBASH3B promoter, leading to its activation and leukemic cell proliferation. In contrast, FLI1 indirectly inhibits UBASH3A transcription via GATA2, thereby antagonizing leukemic growth. These results suggest oncogenic and tumor suppressor roles for UBASH3B and UBASH3A in erythroleukemia, respectively. Mechanistically, we show that UBASH3B indirectly inhibits AP1 (FOS and JUN) expression, and that its loss leads to inhibition of apoptosis and acceleration of proliferation. UBASH3B also positively regulates the SYK gene expression and its inhibition suppresses leukemia progression. High expression of UBASH3B in diverse tumors was associated with worse prognosis. In contrast, UBASH3A knockdown in erythroleukemic cells increased proliferation; and this was associated with a dramatic induction of the HSP70 gene, HSPA1B. Accordingly, knockdown of HSPA1B in erythroleukemia cells significantly accelerated leukemic cell proliferation. Accordingly, overexpression of UBASH3A in different cancers was predominantly associated with good prognosis. These results suggest for the first time that UBASH3A plays a tumor suppressor role in part through activation of HSPA1B. CONCLUSIONS FLI1 promotes erythroleukemia progression in part by modulating expression of the oncogenic UBASH3B and tumor suppressor UBASH3A.
Collapse
MESH Headings
- Humans
- Leukemia, Erythroblastic, Acute/genetics
- Leukemia, Erythroblastic, Acute/pathology
- Proto-Oncogene Protein c-fli-1/genetics
- Proto-Oncogene Protein c-fli-1/metabolism
- RNA, Small Interfering/genetics
- Genes, Tumor Suppressor
- Gene Expression Regulation
- Gene Expression Regulation, Neoplastic
- Cell Line, Tumor
- Oncogene Proteins, Fusion/genetics
- RNA-Binding Protein EWS/genetics
- Adaptor Proteins, Signal Transducing/metabolism
Collapse
Affiliation(s)
- Jie Wang
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang-550014, Guizhou, People's Republic of China
- Natural Products Research Center of Guizhou Province, High Tech Zone, Province Science City, Baiyun District, Guiyang, 550014, China
| | - Chunlin Wang
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang-550014, Guizhou, People's Republic of China
- Natural Products Research Center of Guizhou Province, High Tech Zone, Province Science City, Baiyun District, Guiyang, 550014, China
| | - Anling Hu
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang-550014, Guizhou, People's Republic of China
- Natural Products Research Center of Guizhou Province, High Tech Zone, Province Science City, Baiyun District, Guiyang, 550014, China
| | - Kunlin Yu
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang-550014, Guizhou, People's Republic of China
- Natural Products Research Center of Guizhou Province, High Tech Zone, Province Science City, Baiyun District, Guiyang, 550014, China
| | - Yi Kuang
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang-550014, Guizhou, People's Republic of China
- Natural Products Research Center of Guizhou Province, High Tech Zone, Province Science City, Baiyun District, Guiyang, 550014, China
| | - Babu Gajendran
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang-550014, Guizhou, People's Republic of China
- School of Pharmaceutical Sciences, Guizhou Medical University, Guizhou Province, Guiyang, 550025, People's Republic of China
| | - Eldad Zacksenhaus
- Department of Medicine, University of Toronto, Toronto, ON, Canada
- Division of Advanced Diagnostics, Toronto General Research Institute, University Health Network, Toronto, ON, Canada
| | | | - Xiao Xiao
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang-550014, Guizhou, People's Republic of China
- Natural Products Research Center of Guizhou Province, High Tech Zone, Province Science City, Baiyun District, Guiyang, 550014, China
| | - Wuling Liu
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang-550014, Guizhou, People's Republic of China.
- Natural Products Research Center of Guizhou Province, High Tech Zone, Province Science City, Baiyun District, Guiyang, 550014, China.
| | - Yaacov Ben-David
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang-550014, Guizhou, People's Republic of China.
- Natural Products Research Center of Guizhou Province, High Tech Zone, Province Science City, Baiyun District, Guiyang, 550014, China.
| |
Collapse
|
2
|
Liu Y, Cheng F, Wang ZW, Jin HX, Cao BY, You PF, Hu A, Shi XY, Du J, Yuan ZX. [Preparation of chitin/hyaluronic acid/collagen hydrogel loaded with mouse adipose-derived stem cells and its effects on wound healing of full-thickness skin defects in rats]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2024; 40:50-56. [PMID: 38296236 DOI: 10.3760/cma.j.cn501225-20230928-00101] [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] [Subscribe] [Scholar Register] [Indexed: 02/15/2024]
Abstract
Objective: To prepare the chitin/hyaluronic acid/collagen hydrogel loaded with mouse adipose-derived stem cells and to explore its effects on wound healing of full-thickness skin defects in rats. Methods: The research was an experimental research. Chitin nanofibers were prepared by acid hydrolysis and alkaline extraction method, and then mixed with hyaluronic acid and collagen to prepare chitin/hyaluronic acid/collagen hydrogels (hereinafter referred to as hydrogels). Besides, the hydrogels loaded with mouse adipose-derived stem cells were prepared. Thirty male 12-week-old guinea pigs were divided into negative control group, positive control group, and hydrogel group according to the random number table, with 10 guinea pigs in each group. Ethanol, 4-aminobenzoic acid ethyl ester, or the aforementioned prepared hydrogels without cells were topically applied on both sides of back of guinea pigs respectively for induced contact and stimulated contact, and skin edema and erythema formation were observed at 24 and 48 h after stimulated contact. Adipose-derived stem cells from mice were divided into normal control group cultured routinely and hydrogel group cultured with the aforementioned prepared hydrogels without cells. After 3 d of culture, protein expressions of platelet-derived growth factor-D (PDGF-D), insulin-like growth factor-Ⅰ (IGF-Ⅰ), and transforming growth factor β1 (TGF-β1) were detected by Western blotting (n=3). Eight male 8-week-old Sprague-Dawley rats were taken and a circular full-thickness skin defect wound was created on each side of the back. The wounds were divided into blank control group without any treatment and hydrogel group with the aforementioned prepared hydrogels loaded with adipose-derived stem cells applied. Wound healing was observed at 0 (immediately), 2, 4, 8, and 10 d after injury, and the wound healing rate was calculated at 2, 4, 8, and 10 d after injury. Wound tissue samples at 10 d after injury were collected, the new tissue formation was observed by hematoxylin-eosin staining; the concentrations of interleukin-1α (IL-1α), IL-6, IL-4, and IL-10 were detected by enzyme-linked immunosorbent assay method; the expressions of CD16 and CD206 positive cells were observed by immunohistochemical staining and the percentages of positive cells were calculated. The sample numbers in animal experiment were all 8. Results: At 24 h after stimulated contact, no skin edema was observed in the three groups of guinea pigs, and only mild skin erythema was observed in 7 guinea pigs in positive control group. At 48 h after stimulated contact, skin erythema was observed in 8 guinea pigs and skin edema was observed in 4 guinea pigs in positive control group, while no obvious skin erythema or edema was observed in guinea pigs in the other two groups. After 3 d of culture, the protein expression levels of PDGF-D, IGF-I, and TGF-β1 in adipose-derived stem cells in hydrogel group were significantly higher than those in normal control group (with t values of 12.91, 11.83, and 7.92, respectively, P<0.05). From 0 to 10 d after injury, the wound areas in both groups gradually decreased, and the wounds in hydrogel group were almost completely healed at 10 d after injury. At 4, 8, and 10 d after injury, the wound healing rates in hydrogel group were (38±4)%, (54±5)%, and (69±6)%, respectively, which were significantly higher than (21±6)%, (29±7)%, and (31±7)% in blank control group (with t values of 3.82, 3.97, and 4.05, respectively, Pvalues all <0.05). At 10 d after injury, compared with those in blank control group, the epidermis in wound in hydrogel group was more intact, and there were increases in hair follicles, blood vessels, and other skin appendages. At 10 d after injury, the concentrations of IL-1α and IL-6 in wound tissue in hydrogel group were significantly lower than those in blank control group (with tvalues of 8.21 and 7.99, respectively, P<0.05), while the concentrations of IL-4 and IL-10 were significantly higher than those in blank control group (with tvalues of 6.57 and 9.03, respectively, P<0.05). The percentage of CD16 positive cells in wound tissue in hydrogel group was significantly lower than that in blank control group (t=8.02, P<0.05), while the percentage of CD206 positive cells was significantly higher than that in blank control group (t=7.21, P<0.05). Conclusions: The hydrogel loaded with mouse adipose-derived stem cells is non-allergenic, can promote the secretion of growth factors in adipose-derived stem cells, promote the polarization of macrophages to M2 phenotype in wound tissue in rats with full-thickness skin defects, and alleviate inflammatory reaction, thereby promoting wound healing.
Collapse
Affiliation(s)
- Y Liu
- Department of Emergency Medicine, Northern Theater Command General Hospital, Shenyang 110016, China
| | - F Cheng
- Department of Emergency Medicine, Northern Theater Command General Hospital, Shenyang 110016, China
| | - Z W Wang
- Department of Emergency Medicine, Northern Theater Command General Hospital, Shenyang 110016, China
| | - H X Jin
- Department of Emergency Medicine, Northern Theater Command General Hospital, Shenyang 110016, China
| | - B Y Cao
- Department of Emergency Medicine, Northern Theater Command General Hospital, Shenyang 110016, China
| | - P F You
- Department of Emergency Medicine, Northern Theater Command General Hospital, Shenyang 110016, China
| | - A Hu
- Department of Emergency Medicine, Northern Theater Command General Hospital, Shenyang 110016, China
| | - X Y Shi
- Department of Emergency Medicine, Northern Theater Command General Hospital, Shenyang 110016, China
| | - J Du
- Laboratory of Acute and Critical Care Research and Transformation, Jilin Provincial People's Hospital, Changchun 130021, China
| | - Z X Yuan
- Department of Emergency Medicine, Jilin Provincial People's Hospital, Changchun 130021, China
| |
Collapse
|
3
|
Yang L, Miller ED, Shakya R, Na R, Hu A, Packard R, Williams TM. Investigation of ATR Inhibitor VX970 as a Radiosensitizer in Colorectal Cancer Cells. Int J Radiat Oncol Biol Phys 2023; 117:e271-e272. [PMID: 37785025 DOI: 10.1016/j.ijrobp.2023.06.1239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Colorectal cancer (CRC) is the second leading cause of combined cancer-related mortality in males and females in the U.S. Traditional treatment of locally advanced rectal cancer consists of neoadjuvant chemoradiation followed by surgery and adjuvant chemotherapy. Emerging data suggests that higher response rates can be achieved with total neoadjuvant therapy (TNT) where delivery of all chemotherapy and radiation therapy (RT) occurs prior to surgery. In addition, for patients with a complete response to TNT, non-operative management (NOM) can be considered. However, despite the use of TNT, pathologic complete response rates remain below 40% and NOM is only achieved in approximately 50% of rectal cancer patients. A strong need remains for more active anti-cancer therapies in rectal cancer to both reduce pelvic recurrence and facilitate NOM. Here, we tested the hypothesis that inhibition of the ataxia telangiectasia and Rad3-related protein kinase (ATR), a critical regulator of cellular DNA damage response, could increase the sensitivity of CRC to RT. MATERIALS/METHODS VX970, a highly potent and selective ATR inhibitor, was investigated as a radiosensitizer in SW48 and LoVo CRC cell models. In vitro, IC50 of VX970 was assessed by alamarBlue cytotoxicity assay, while radiosensitivity was revealed by radiation clonogenic assays (0, 2, 4, 6, 8 Gy). ATR activity was determined by p-Chk1 using immunoblotting, and cell cycle distribution was analyzed by propidium iodide flow cytometry. CRC xenografts were generated using both LoVo and SW48 cells injected in the left flanks of athymic nude mice to explore the radiosensitizing effects of VX970 in vivo. Tumors were allowed to grow to 100-150 mm3, and the mice were randomized into multiple groups [vehicle alone, RT alone (10 Gy/5 fractions), VX970 alone, and VX970+RT]. Mouse weights and tumor size were measured three times weekly. Comparison of treatment groups was performed using the log-rank test with P<0.05 considered significant. RESULTS The IC50 concentrations of VX970 on SW48 and LoVo cells were about 500 and 100 nM, respectively. VX970 at doses of 3 nM did not alter the viability of CRC cells, but significantly sensitized CRC cells to radiotherapy (P<0.05), with DER of 1.43 and 1.59, respectively, in SW48 and LoVo cells. VX970 efficiently attenuated p-Chk1 expression and significantly abrogated radiation induced G2/M cell cycle arrest (P<0.05). In addition, VX970 in combination with radiotherapy significantly prolonged tumor growth delay of CRC xenografts compared to radiation alone (P<0.05), with minimal toxicity observed. CONCLUSION Inhibition of the ATR-Chk1 pathway by targeting ATR kinase with VX970 sensitizes CRC to radiotherapy in vitro and in vivo. Our findings support that ATR inhibition by VX970 is a promising new approach to improve the therapeutic ratio of radiotherapy for patients with CRC and warrants further clinical testing.
Collapse
Affiliation(s)
- L Yang
- Department of Radiation Oncology, City of Hope National Medical Center, Duarte, CA
| | - E D Miller
- Department of Radiation Oncology, The Ohio State University Wexner Medical Center, Columbus, OH
| | - R Shakya
- Target Validation Shared Resource, The Ohio State University, Columbus, OH
| | - R Na
- Target Validation Shared Resource, The Ohio State University, Columbus, OH
| | - A Hu
- The Ohio State University Wexner Medical Center, Columbus, OH
| | - R Packard
- The Ohio State University Wexner Medical Center, Columbus, OH
| | - T M Williams
- Department of Radiation Oncology, City of Hope National Medical Center, Duarte, CA
| |
Collapse
|
4
|
Wu W, Hu A, Xu H, Su J. LincRNA-EPS Alleviates Inflammation in TMJ Osteoarthritis by Binding to SRSF3. J Dent Res 2023; 102:1141-1151. [PMID: 37464762 DOI: 10.1177/00220345231180464] [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: 07/20/2023] Open
Abstract
Temporomandibular joint osteoarthritis (TMJOA) is a common inflammatory disease that can cause pain, cartilage degradation, and subchondral bone loss. However, the key regulatory factors and new targets for the treatment of TMJOA have yet to be determined. Long noncoding RNAs (lncRNAs) have shown remarkable potential in regulating tissue homeostasis and disease development. The long intergenic RNA-erythroid prosurvival (lincRNA-EPS) is reported to be an effective inhibitor of inflammation, but its role in TMJOA is unexplored. Here, we found that lincRNA-EPS is downregulated and negatively correlated with inflammatory factors in the condyles of TMJOA mice. LincRNA-EPS knockout aggravated inflammation and tissue destruction after TMJOA modeling. The in vitro studies confirmed that loss of lincRNA-EPS facilitated inflammatory factor expression in condylar chondrocytes, while recovered expression of lincRNA-EPS showed anti-inflammatory effects. Mechanistically, RNA sequencing revealed that the inflammatory response pathway nuclear factor-kappa B (NF-κB) was mostly affected by lincRNA-EPS deficiency. Moreover, lincRNA-EPS was proved to effectively bind to serine/arginine-rich splicing factor 3 (SRSF3) and inhibit its function in pyruvate kinase isoform M2 (PKM2) formation, thus restraining the PKM2/NF-κB pathway and the expression of inflammatory factors. In addition, local injection of the lincRNA-EPS overexpression lentivirus significantly alleviated inflammation, cartilage degradation, and subchondral bone loss in TMJOA mice. Overall, lincRNA-EPS regulated the inflammatory process of condylar chondrocytes by binding to SRSF3 and showed translational application potential in the treatment of TMJOA.
Collapse
Affiliation(s)
- W Wu
- Department of Prosthodontics, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - A Hu
- Department of Prosthodontics, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - H Xu
- Department of Prosthodontics, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - J Su
- Department of Prosthodontics, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| |
Collapse
|
5
|
Xu S, Hu A, Chen J, Shuai Z, Liu T, Deng J, Li L, Gong Q, He Z, Yu L. The role of calcium-sensing receptor in ginsenoside Rg1 promoting reendothelialization to inhibit intimal hyperplasia after balloon injury. Biomed Pharmacother 2023; 163:114843. [PMID: 37201261 DOI: 10.1016/j.biopha.2023.114843] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 04/25/2023] [Accepted: 05/04/2023] [Indexed: 05/20/2023] Open
Abstract
Calcium-sensing receptor (CaSR) is a G protein-coupled receptor, widely distributed in various tissues, including vascular endothelial cells and smooth muscle cells, which plays an important role in the migration and homing of stem/progenitor cells and the proliferation of tissue cells. Restenosis after Percutaneous coronary intervention (PCI) seriously affects its prognosis and application. Our previous research has found that ginsenoside Rg1 (GS-Rg1) can inhibit the occurrence of restenosis after balloon injury of the common carotid artery in rats, but the mechanism is still unclear. In this study, it was found that GS-Rg1 (4, 8, 16 mg/kg) inhibited vascular restenosis caused by balloon injury, and mobilize endothelial progenitor cells (EPCs) to promote reendothelialization and inhibit intimal hyperplasia, which significantly reduced after administration of CaSR antagonist NPS 2143. Interestingly, CaSR and its downstream JNK, P38 were highly expressed in the proliferative intima and participated in the abnormal proliferation of vascular smooth muscle cells mediated by smooth muscle progenitor cells (SMPCs). GS-Rg1 inhibited intimal hyperplasia, while it decreased the expression of CaSR, JNK, and P38. This might relate to the distribution of CaSR and the facilitation of GS-Rg1 on the vascular endothelial repair. It is concluded that CaSR plays a key role in GS-Rg1 promoting reendothelialization to inhibit intimal hyperplasia after balloon Injury.
Collapse
Affiliation(s)
- Shangfu Xu
- Key Laboratory of Cell Engineering of Guizhou Province, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou 563000, China; Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou 563000, China; Collaborative Innovation Center of Chinese Ministry of Education, Zunyi Medical University, Zunyi, Guizhou 563000, China; Department of Pharmacology, School of Pharmacy, Zunyi Medical University, Zunyi, Guizhou 563000, China.
| | - Anling Hu
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou 563000, China; The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, Guizhou 550014, China
| | - Jiameng Chen
- Key Laboratory of Cell Engineering of Guizhou Province, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou 563000, China; Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Zhiqin Shuai
- Key Laboratory of Cell Engineering of Guizhou Province, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou 563000, China; Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Taotao Liu
- Key Laboratory of Cell Engineering of Guizhou Province, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou 563000, China; Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Jiang Deng
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou 563000, China; Department of Pharmacology, School of Pharmacy, Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Lisheng Li
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou 563000, China; Department of Pharmacology, School of Pharmacy, Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Qihai Gong
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou 563000, China; Department of Pharmacology, School of Pharmacy, Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Zhixu He
- Key Laboratory of Cell Engineering of Guizhou Province, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou 563000, China; Collaborative Innovation Center of Chinese Ministry of Education, Zunyi Medical University, Zunyi, Guizhou 563000, China.
| | - Limei Yu
- Key Laboratory of Cell Engineering of Guizhou Province, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou 563000, China; Collaborative Innovation Center of Chinese Ministry of Education, Zunyi Medical University, Zunyi, Guizhou 563000, China.
| |
Collapse
|
6
|
Gao J, Hu J, Yu F, Wang C, Sheng D, Liu W, Hu A, Yu K, Xiao X, Kuang Y, Zacksenhaus E, Gajendran B, Ben-David Y. Lovastatin inhibits erythroleukemia progression through KLF2-mediated suppression of MAPK/ERK signaling. BMC Cancer 2023; 23:306. [PMID: 37016335 PMCID: PMC10071686 DOI: 10.1186/s12885-023-10742-4] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 03/15/2023] [Indexed: 04/06/2023] Open
Abstract
BACKGROUND Lovastatin, an HMG-CoA inhibitor and an effective cholesterol lowering drug, exhibits anti-neoplastic activity towards several types of cancer, although the underlying mechanism is still not fully understood. Herein, we investigated mechanism of growth inhibition of leukemic cells by lovastatin. METHODS RNAseq analysis was used to explore the effect of lovastatin on gene expression in leukemic cells. An animal model of leukemia was used to test the effect of this statin in vivo. FAM83A and DDIT4 expression was knocked-downed in leukemia cells via lentivirus-shRNA. Western blotting, RT-qPCR, cell cycle analysis and apoptosis assays were used to determine the effect of lovastatin-induced growth suppression in leukemic cells in vitro. RESULTS Lovastatin treatment strongly inhibited cancer progression in a mouse model of erythroleukemia induced by Friend virus. In tissue culture, lovastatin inhibited cell proliferation through induction of G1 phase cell cycle arrest and apoptosis. Interestingly, lovastatin induced most known genes associated with cholesterol biosynthesis in leukemic cells. Moreover, it suppressed ERK1/2 phosphorylation by downregulating FAM83A and DDIT4, two mediators of MAP-Kinase signaling. RNAseq analysis of lovastatin treated leukemic cells revealed a strong induction of the tumor suppressor gene KLF2. Accordingly, lentivirus-mediated knockdown of KLF2 antagonized leukemia cell suppression induced by lovastatin, associated with higher ERK1/2 phosphorylation compared to control. We further show that KLF2 induction by lovastatin is responsible for lower expression of the FAM83A and DDIT4 oncogenes, involved in the activation of ERK1/2. KLF2 activation by lovastatin also activated a subset of cholesterol biosynthesis genes that may further contribute to leukemia suppression. CONCLUSIONS These results implicate KLF2-mediated FAM83A/DDIT4/MAPK suppression and activation of cholesterol biosynthesis as the mechanism of leukemia cell growth inhibition by lovastatin.
Collapse
Affiliation(s)
- Jian Gao
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, Guizhou, 550014, People's Republic of China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese, Academic of Sciences, Guiyang, Guizhou, People's Republic of China
| | - Jifen Hu
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, Guizhou, 550014, People's Republic of China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese, Academic of Sciences, Guiyang, Guizhou, People's Republic of China
| | - Fang Yu
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, Guizhou, 550014, People's Republic of China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese, Academic of Sciences, Guiyang, Guizhou, People's Republic of China
| | - Chunlin Wang
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, Guizhou, 550014, People's Republic of China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese, Academic of Sciences, Guiyang, Guizhou, People's Republic of China
| | - Danmei Sheng
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, Guizhou, 550014, People's Republic of China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese, Academic of Sciences, Guiyang, Guizhou, People's Republic of China
| | - Wuling Liu
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, Guizhou, 550014, People's Republic of China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese, Academic of Sciences, Guiyang, Guizhou, People's Republic of China
| | - Anling Hu
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, Guizhou, 550014, People's Republic of China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese, Academic of Sciences, Guiyang, Guizhou, People's Republic of China
| | - Kunling Yu
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, Guizhou, 550014, People's Republic of China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese, Academic of Sciences, Guiyang, Guizhou, People's Republic of China
| | - Xiao Xiao
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, Guizhou, 550014, People's Republic of China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese, Academic of Sciences, Guiyang, Guizhou, People's Republic of China
| | - Yi Kuang
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, Guizhou, 550014, People's Republic of China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese, Academic of Sciences, Guiyang, Guizhou, People's Republic of China
| | - Eldad Zacksenhaus
- Department of Medicine, University of Toronto, Toronto, ON, Canada
- Division of Advanced Diagnostics, Toronto General Research Institute, University Health Network, Toronto, ON, Canada
| | - Babu Gajendran
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, Guizhou, 550014, People's Republic of China.
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese, Academic of Sciences, Guiyang, Guizhou, People's Republic of China.
- School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou Province, 550025, People's Republic of China.
| | - Yaacov Ben-David
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, Guizhou, 550014, People's Republic of China.
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese, Academic of Sciences, Guiyang, Guizhou, People's Republic of China.
| |
Collapse
|
7
|
Lyon A, Yu Q, Hu A, Benson J, Ahmed O. Abstract No. 572 Meta-Analysis of Genicular Artery Embolization for Treatment of Osteoarthritis of the Knee. J Vasc Interv Radiol 2023. [DOI: 10.1016/j.jvir.2022.12.430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2023] Open
|
8
|
Lyon A, Yu Q, Tran P, Ungchusri E, Hu A, Neale M, Benson J, Ahmed O. Abstract No. 594 Single Session Mechanical Thrombectomy of Ileofemoral Deep Vein Thrombosis with ClotTriever: Exploring its Possibilities in an Outpatient Setting. J Vasc Interv Radiol 2023. [DOI: 10.1016/j.jvir.2022.12.452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/26/2023] Open
|
9
|
Hu A, Cohen E, Fishbein T, Sharma K. Abstract No. 198 Portal Vein Embolization for Future Liver Remnant Enhancement in Initially Unresectable Pediatric Hepatoblastoma. J Vasc Interv Radiol 2023. [DOI: 10.1016/j.jvir.2022.12.256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2023] Open
|
10
|
Xiao F, Hu A, Meng B, Zhang Y, Han W, Su J. PVH-Peri5 Pathway for Stress-Coping Oromotor and Anxious Behaviors in Mice. J Dent Res 2023; 102:227-237. [PMID: 36303441 DOI: 10.1177/00220345221130305] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Stressful stimuli can activate the hypothalamic-pituitary-adrenal (HPA) axis. Clinically, it has been widely reported that stressful events are often accompanied by teeth clenching and bruxism, while mastication (chewing) can promote coping with stress. Trigeminal motoneurons in the trigeminal motor nucleus supplying the chewing muscles receive direct inputs from interneurons within the peritrigeminal premotor area (Peri5). Previous studies found that the paraventricular hypothalamic nucleus (PVH) participates in trigeminal activities during stressful events. However, the neural pathway by which the stress-induced oral movements alleviate stress is largely unknown. We hypothesized that paraventricular-trigeminal circuits might be associated with the stress-induced chewing movements and anxiety levels. First, we observed the stress-coping effect of wood gnawing on stress-induced anxiety, with less anxiety-like behaviors seen in the open field test and elevated plus maze, as well as decreased corticosterone and blood glucose levels, in response to stress in mice. We then found that excitotoxic lesions of PVH reduced the effect of gnawing on stress, reflected in more anxiety-like behaviors; this emphasizes the importance of the PVH in stress responses. Anterograde, retrograde, transsynaptic, and nontranssynaptic tracing through central and peripheral injections confirmed monosynaptic projections from PVH to Peri5. We discovered that PVH receives proprioceptive sensory inputs from the jaw muscle and periodontal ligaments, as well as provides motor outputs via the mesencephalic trigeminal nucleus (Me5) and Peri5. Next, pathway-specific functional manipulation by chemogenetic inhibition was conducted to further explore the role of PVH-Peri5 monosynaptic projections. Remarkably, PVH-Peri5 inhibition decreased gnawing but did not necessarily reduce stress-induced anxiety. Moreover, neuropeptide B (NPB) was expressed in Peri5-projecting PVH neurons, indicating that NPB signaling may mediate the effects of PVH-Peri5. In conclusion, our data revealed a PVH-Peri5 circuit that plays a role in the stress response via its associations with oromotor movements and relative anxiety-like behaviors.
Collapse
Affiliation(s)
- F Xiao
- Department of Prosthodontics, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - A Hu
- Department of Prosthodontics, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - B Meng
- Department of Pharmacology and Chemical Biology, Emory University School of Medicine, Atlanta, GA, USA.,Department of Neurology, Emory University School of Medicine, Atlanta, GA, USA
| | - Y Zhang
- Department of Prosthodontics, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - W Han
- Nash Family Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York City, NY, USA
| | - J Su
- Department of Prosthodontics, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| |
Collapse
|
11
|
Hu J, Gao J, Wang C, Liu W, Hu A, Xiao X, Kuang Y, Yu K, Gajendran B, Zacksenhaus E, Pan W, Ben-David Y. FLI1 Regulates Histamine Decarboxylase Expression to Control Inflammation Signaling and Leukemia Progression. J Inflamm Res 2023; 16:2007-2020. [PMID: 37193069 PMCID: PMC10183177 DOI: 10.2147/jir.s401566] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 05/03/2023] [Indexed: 05/18/2023] Open
Abstract
Aim Histamine decarboxylase (HDC) catalyzes decarboxylation of histidine to generate histamine. This enzyme affects several biological processes including inflammation, allergy, asthma, and cancer, although the underlying mechanism is not fully understood. The present study provides a novel insight into the relationship between the transcription factor FLI1 and its downstream target HDC, and their effects on inflammation and leukemia progression. Methods Promoter analysis combined with chromatin immunoprecipitation (ChIp) was used to demonstrate binding of FLI1 to the promoter of HDC in leukemic cells. Western blotting and RT-qPCR were used to determine expression of HDC and allergy response genes, and lentivirus shRNA was used to knock-down target genes. Proliferation, cell cycle, apoptosis assays and molecular docking were used to determine the effect of HDC inhibitors in culture. An animal model of leukemia was employed to test the effect of HDC inhibitory compounds in vivo. Results Results presented herein demonstrate that FLI1 transcriptionally regulates HDC by direct binding to its promoter. Using genetic and pharmacological inhibition of HDC, or the addition of histamine, the enzymatic product of HDC, we show neither have a discernable effect on leukemic cell proliferation in culture. However, HDC controls several inflammatory genes including IL1B and CXCR2 that may influence leukemia progression in vivo through the tumor microenvironment. Indeed, diacerein, an IL1B inhibitor, strongly blocked Fli-1-induced leukemia in mice. In addition to allergy, FLI1 is shown to regulate genes associated with asthma such as IL1B, CPA3 and CXCR2. Toward treatment of these inflammatory conditions, epigallocatechin (EGC), a tea polyphenolic compound, is found strongly inhibit HDC independently of FLI1 and its downstream effector GATA2. Moreover, the HDC inhibitor, tetrandrine, suppressed HDC transcription by directly binding to and inhibiting the FLI1 DNA binding domain, and like other FLI1 inhibitors, tetrandrine strongly suppressed cell proliferation in culture and leukemia progression in vivo. Conclusion These results suggest a role for the transcription factor FLI1 in inflammation signaling and leukemia progression through HDC and point to the HDC pathway as potential therapeutics for FLI1-driven leukemia.
Collapse
Affiliation(s)
- Jifen Hu
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, Guizhou, 550014, People’s Republic of China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, Guizhou, People’s Republic of China
| | - Jian Gao
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, Guizhou, 550014, People’s Republic of China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, Guizhou, People’s Republic of China
| | - Chunlin Wang
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, Guizhou, 550014, People’s Republic of China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, Guizhou, People’s Republic of China
| | - Wuling Liu
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, Guizhou, 550014, People’s Republic of China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, Guizhou, People’s Republic of China
| | - Anling Hu
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, Guizhou, 550014, People’s Republic of China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, Guizhou, People’s Republic of China
| | - Xiao Xiao
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, Guizhou, 550014, People’s Republic of China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, Guizhou, People’s Republic of China
| | - Yi Kuang
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, Guizhou, 550014, People’s Republic of China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, Guizhou, People’s Republic of China
| | - Kunlin Yu
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, Guizhou, 550014, People’s Republic of China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, Guizhou, People’s Republic of China
| | - Babu Gajendran
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, Guizhou, 550014, People’s Republic of China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, Guizhou, People’s Republic of China
- School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou Province, 550025, People’s Republic of China
| | - Eldad Zacksenhaus
- Department of Medicine, University of Toronto, Toronto, Ontario, Canada, and Division of Advanced Diagnostics, Toronto General Research Institute, University Health Network, Toronto, Ontario, Canada
| | - Weidong Pan
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, Guizhou, 550014, People’s Republic of China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, Guizhou, People’s Republic of China
| | - Yaacov Ben-David
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, Guizhou, 550014, People’s Republic of China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, Guizhou, People’s Republic of China
- Correspondence: Yaacov Ben-David, State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Province Science City, High Tech Zone, Baiyun District, Guiyang, 550014, People’s Republic of China, Email
| |
Collapse
|
12
|
Liu W, Gajendran B, Sample KM, Wang C, Hu A, Chen B, Li Y, Zacksenhaus E, Ben-David Y. A critical ETV4/Twist1/Vimentin axis in Ha-RAS-induced aggressive breast cancer. Cancer Gene Ther 2022; 29:1590-1599. [PMID: 35477769 DOI: 10.1038/s41417-022-00471-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 03/29/2022] [Accepted: 04/07/2022] [Indexed: 02/04/2023]
Abstract
RAS oncogenes are major drivers of diverse types of cancer. However, they are largely not druggable, and therefore targeting critical downstream pathways and dependencies is an attractive approach. We have isolated a tumorigenic cell line (FE1.2), which exhibits mesenchymal characteristics, after inoculating Ha-Ras-expressing retrovirus into mammary glands of rats, and subsequently isolated a non-aggressive revertant cell line (FC5). This revertant has lost the rat Ha-Ras driver and showed a more epithelial morphology, slower proliferation in culture, and reduced tumorigenicity in vivo. Re-expression of human Ha-RAS in these cells (FC5-RAS) reinduced mesenchymal morphology, higher proliferation rate, and tumorigenicity that was still significantly milder than parental FE1.2 cells. RNA-seq analysis of FC5-RAS vs FC5-Vector cells identified multiple genes whose expressions were regulated by Ha-RAS. This analysis also identified many genes including those controlling cell growth whose expression was altered by loss of HA-Ras in FC5 cells but remained unchanged upon reintroduction of Ha-RAS. These results suggest that targeting the Ha-Ras driver oncogene induces partial tumor regression, but it still denotes strong efficacy for cancer therapy. Among the RAS-responsive genes, we identified Twist1 as a critical mediator of epithelial-to-mesenchymal transition through the direct transcriptional regulation of vimentin. Mechanistically, we show that Twist1 is induced by the ETS gene, ETV4, downstream of Ha-RAS, and that inhibition of ETV4 suppressed the growth of breast cancer cells driven by the Ha-RAS pathway. Targeting the ETV4/Twist1/Vimentin axis may therefore offer a therapeutic modality for breast tumors driven by the Ha-RAS pathway.
Collapse
Affiliation(s)
- Wuling Liu
- State Key Laboratory for Functions and Applications of Medicinal Plants/College of Basic Medical Sciences, Guizhou Medical University, Guiyang, Guizhou, China.,The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, Guizhou, China
| | - Babu Gajendran
- State Key Laboratory for Functions and Applications of Medicinal Plants/College of Basic Medical Sciences, Guizhou Medical University, Guiyang, Guizhou, China.,The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, Guizhou, China.,School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou, China
| | - Klarke M Sample
- State Key Laboratory for Functions and Applications of Medicinal Plants/College of Basic Medical Sciences, Guizhou Medical University, Guiyang, Guizhou, China.,The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, Guizhou, China
| | - Chunlin Wang
- State Key Laboratory for Functions and Applications of Medicinal Plants/College of Basic Medical Sciences, Guizhou Medical University, Guiyang, Guizhou, China.,The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, Guizhou, China
| | - Anling Hu
- State Key Laboratory for Functions and Applications of Medicinal Plants/College of Basic Medical Sciences, Guizhou Medical University, Guiyang, Guizhou, China.,The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, Guizhou, China
| | - Beiling Chen
- State Key Laboratory for Functions and Applications of Medicinal Plants/College of Basic Medical Sciences, Guizhou Medical University, Guiyang, Guizhou, China.,The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, Guizhou, China
| | - Yanmei Li
- State Key Laboratory for Functions and Applications of Medicinal Plants/College of Basic Medical Sciences, Guizhou Medical University, Guiyang, Guizhou, China.,The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, Guizhou, China
| | - Eldad Zacksenhaus
- Department of Medicine, University of Toronto, Toronto, ON, Canada.,Division of Advanced Diagnostics, Toronto General Research Institute-University Health Network, Toronto, ON, Canada
| | - Yaacov Ben-David
- State Key Laboratory for Functions and Applications of Medicinal Plants/College of Basic Medical Sciences, Guizhou Medical University, Guiyang, Guizhou, China. .,The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, Guizhou, China.
| |
Collapse
|
13
|
Capt B, Hu A, Yao L. DISTINGUISHING POLYCYTHEMIA FROM ALLERGIC PRURITUS. Ann Allergy Asthma Immunol 2022. [DOI: 10.1016/j.anai.2022.08.951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
14
|
Li H, Chen M, Xue C, Li L, Hu A, Yang W, Zheng Z, Ni M, Zhang L, Zeng Y, Peng J, Yao K, Zhou F, Liu Z, An X, Shi Y. 1744P Camrelizumab plus nab-paclitaxel in platinum-resistant patients with unresectable locally advanced or metastatic urothelial carcinoma: A multicentre, single-arm, phase II study. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
|
15
|
Qiu J, Zhang Z, Hu A, Zhao P, Wei X, Song H, Yang J, Li Y. Integrating UPLC-HR-MS/MS, Network Pharmacology, and Experimental Validation to Uncover the Mechanisms of Jin'gan Capsules against Breast Cancer. ACS Omega 2022; 7:28003-28015. [PMID: 35990498 PMCID: PMC9386888 DOI: 10.1021/acsomega.2c01921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 07/25/2022] [Indexed: 06/15/2023]
Abstract
In the theory of traditional Chinese medicine (TCM), "liver-qi" stagnation and heat-induced toxicity represent the main etiologies of breast cancer. Recently, several TCMs with heat-clearing and detoxification efficacy have shown inhibitory effects on breast cancer. Jin'gan capsules (JGCs), initially approved to treat colds in China, are a heat-clearing and detoxification TCM formula. However, the anticancer activity of JGCs against breast cancer and its underlying mechanisms remain unclear. First, we assessed the antiproliferative activity of JGCs in breast cancer cell lines and evaluated their effects on cell apoptosis and the cell cycle by flow cytometry. Furthermore, we identified the potential bioactive components of JGCs and their corresponding target genes and constructed a bioactive compound-target interaction network by ultra-performance liquid chromatography-high-resolution tandem mass spectrometry (UPLC-HR-MS/MS) and network pharmacology analysis. Finally, the underlying mechanism was investigated through gene function enrichment analysis and experimental validation. We found that JGCs significantly inhibited breast cancer cell growth with IC50 values of 0.56 ± 0.03, 0.16 ± 0.03, and 0.94 ± 0.09 mg/mL for MDA-MB-231, MDA-MB-468, and MCF-7, respectively. In addition, JGC treatment dramatically induced apoptosis and S phase cell cycle arrest in breast cancer cells. Western blot analysis confirmed that JGCs could regulate the protein levels of apoptosis- and cell cycle-related genes. Utilizing UPLC-HR-MS/MS analysis and network pharmacology, we identified 7 potential bioactive ingredients in JGCs and 116 antibreast cancer targets. Functional enrichment analysis indicated that the antitumor effects of JGCs were strongly associated with apoptosis and the Janus kinase (JAK)-signal transducer and activator of transcription (STAT) signaling pathway. Western blot analysis validated that JGC treatment markedly decreased the expression levels of p-JAK2, p-STAT3, and STAT3. Our findings suggest that JGCs suppress breast cancer cell proliferation and induce cell cycle arrest and apoptosis partly by inhibiting the JAK2/STAT3 signaling pathway, highlighting JGCs as a potential therapeutic candidate against breast cancer.
Collapse
Affiliation(s)
- Jianfei Qiu
- State
Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China
- State
Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- The
Key Laboratory of Chemistry for Natural Products of Guizhou Province
and Chinese Academic of Sciences & Key Laboratory of Endemic and
Ethnic Diseases, Ministry of Education & Key Laboratory of Medical
Molecular Biology of Guizhou Province, Guizhou
Medical University, Guiyang 550004, China
| | - Zhiyin Zhang
- Guiyang
Hospital of Guizhou Aviation Industry Group, Guiyang 550025, China
| | - Anling Hu
- State
Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China
- State
Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- The
Key Laboratory of Chemistry for Natural Products of Guizhou Province
and Chinese Academic of Sciences & Key Laboratory of Endemic and
Ethnic Diseases, Ministry of Education & Key Laboratory of Medical
Molecular Biology of Guizhou Province, Guizhou
Medical University, Guiyang 550004, China
| | - Peng Zhao
- State
Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China
- State
Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- The
Key Laboratory of Chemistry for Natural Products of Guizhou Province
and Chinese Academic of Sciences & Key Laboratory of Endemic and
Ethnic Diseases, Ministry of Education & Key Laboratory of Medical
Molecular Biology of Guizhou Province, Guizhou
Medical University, Guiyang 550004, China
| | - Xuenai Wei
- State
Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China
- State
Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- The
Key Laboratory of Chemistry for Natural Products of Guizhou Province
and Chinese Academic of Sciences & Key Laboratory of Endemic and
Ethnic Diseases, Ministry of Education & Key Laboratory of Medical
Molecular Biology of Guizhou Province, Guizhou
Medical University, Guiyang 550004, China
| | - Hui Song
- The
Key Laboratory of Chemistry for Natural Products of Guizhou Province
and Chinese Academic of Sciences & Key Laboratory of Endemic and
Ethnic Diseases, Ministry of Education & Key Laboratory of Medical
Molecular Biology of Guizhou Province, Guizhou
Medical University, Guiyang 550004, China
| | - Jue Yang
- State
Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China
- State
Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- The
Key Laboratory of Chemistry for Natural Products of Guizhou Province
and Chinese Academic of Sciences & Key Laboratory of Endemic and
Ethnic Diseases, Ministry of Education & Key Laboratory of Medical
Molecular Biology of Guizhou Province, Guizhou
Medical University, Guiyang 550004, China
| | - Yanmei Li
- State
Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China
- State
Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- The
Key Laboratory of Chemistry for Natural Products of Guizhou Province
and Chinese Academic of Sciences & Key Laboratory of Endemic and
Ethnic Diseases, Ministry of Education & Key Laboratory of Medical
Molecular Biology of Guizhou Province, Guizhou
Medical University, Guiyang 550004, China
| |
Collapse
|
16
|
Foxe D, Hu A, Cheung SC, Ahmed RM, Cordato NJ, Devenney E, Hwang YT, Halliday GM, Mueller N, Leyton CE, Hodges JR, Burrell JR, Irish M, Piguet O. Utility of the Addenbrooke’s Cognitive Examination III online calculator to differentiate the primary progressive aphasia variants. Brain Commun 2022; 4:fcac161. [PMID: 35912134 PMCID: PMC9336588 DOI: 10.1093/braincomms/fcac161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 04/11/2022] [Accepted: 06/16/2022] [Indexed: 12/22/2022] Open
Abstract
The Addenbrooke’s Cognitive Examination III is a brief cognitive screening tool that is widely used for the detection and monitoring of dementia. Recent findings suggest that the three variants of primary progressive aphasia can be distinguished based on their distinct profiles on the five subdomain scores of this test. Here, we investigated the utility of the Addenbrooke’s Cognitive Examination III to differentiate the primary progressive aphasia variants based on their item-by-item performance profiles on this test. From these results, we created an interactive primary progressive aphasia Addenbrooke’s Cognitive Examination III calculator which predicts the variant based on a patient’s unique item-by-item profile. Twenty-eight logopenic variant, 25 non-fluent variant and 37 semantic variant primary progressive aphasia patients and 104 healthy controls completed the Addenbrooke’s Cognitive Examination III at first clinical presentation. Multinomial regression analyses were conducted to establish performance profiles among groups, and R Shiny from RStudio was used to create the interactive Addenbrooke’s Cognitive Examination III diagnostic calculator. To verify its accuracy, probability values of the regression model were derived based on a 5-fold cross-validation of cases. The calculator’s accuracy was then verified in an independent sample of 17 logopenic, 19 non-fluent and 13 semantic variant primary progressive aphasia patients and 68 Alzheimer’s disease patients who had completed the Addenbrooke’s Cognitive Examination III (or an older version of this test: Revised) and had in vivo amyloid-PET imaging and/or brain autopsy pathological confirmation. Cross-validation of cases in the calculator model revealed different rates of sensitivity in classifying variants: semantic = 100%, non-fluent = 80.6% and logopenic = 79.9%; healthy controls were distinguished from primary progressive aphasia patients with 100% sensitivity. Verification of in vivo amyloid and/or autopsy-confirmed patients showed that the calculator correctly classified 10/13 (77%) semantic variant, 3/19 (16%) non-fluent variant and 4/17 (24%) logopenic variant patients. Importantly, for patients who were not classified, diagnostic probability values mostly pointed toward the correct clinical diagnosis. Furthermore, misclassified diagnoses of the primary progressive aphasia cohort were rare (1/49; 2%). Although 22 of the 68 Alzheimer’s disease patients (32%) were misclassified with primary progressive aphasia, 19/22 were misclassified with the logopenic variant (i.e. falling within the same neuropathological entity). The Addenbrooke’s Cognitive Examination III primary progressive aphasia diagnostic calculator demonstrates sound accuracy in differentiating the variants based on an item-by-item Addenbrooke’s Cognitive Examination III profile. This calculator represents a new frontier in using data-driven approaches to differentiate the primary progressive aphasia variants.
Collapse
Affiliation(s)
- D Foxe
- School of Psychology, The University of Sydney , 94 Mallett St, Sydney, NSW 2006 , Australia
- Brain and Mind Centre, The University of Sydney , Sydney, NSW 2050 , Australia
| | - A Hu
- Brain and Mind Centre, The University of Sydney , Sydney, NSW 2050 , Australia
- School of Mathematics and Statistics, The University of Sydney , Sydney, NSW 2006 , Australia
| | - S C Cheung
- School of Psychology, The University of Sydney , 94 Mallett St, Sydney, NSW 2006 , Australia
- Brain and Mind Centre, The University of Sydney , Sydney, NSW 2050 , Australia
| | - R M Ahmed
- Brain and Mind Centre, The University of Sydney , Sydney, NSW 2050 , Australia
- Central Clinical School, The University of Sydney , Sydney, NSW 2006 , Australia
| | - N J Cordato
- Brain and Mind Centre, The University of Sydney , Sydney, NSW 2050 , Australia
- St George Clinical School, University of New South Wales , Sydney, NSW 2217 , Australia
- The Department of Aged Care, St George Hospital , Sydney, NSW 2217 , Australia
- Calvary Health Care Kogarah, Calvary Community Health , Sydney, NSW 2217 , Australia
| | - E Devenney
- Brain and Mind Centre, The University of Sydney , Sydney, NSW 2050 , Australia
- Central Clinical School, The University of Sydney , Sydney, NSW 2006 , Australia
| | - Y T Hwang
- Brain and Mind Centre, The University of Sydney , Sydney, NSW 2050 , Australia
- Central Clinical School, The University of Sydney , Sydney, NSW 2006 , Australia
| | - G M Halliday
- Brain and Mind Centre, The University of Sydney , Sydney, NSW 2050 , Australia
- Central Clinical School, The University of Sydney , Sydney, NSW 2006 , Australia
| | - N Mueller
- Brain and Mind Centre, The University of Sydney , Sydney, NSW 2050 , Australia
- Central Clinical School, The University of Sydney , Sydney, NSW 2006 , Australia
| | - C E Leyton
- School of Psychology, The University of Sydney , 94 Mallett St, Sydney, NSW 2006 , Australia
- Brain and Mind Centre, The University of Sydney , Sydney, NSW 2050 , Australia
| | - J R Hodges
- Brain and Mind Centre, The University of Sydney , Sydney, NSW 2050 , Australia
| | - J R Burrell
- Brain and Mind Centre, The University of Sydney , Sydney, NSW 2050 , Australia
- Concord Clinical School, Sydney Medical School, The University of Sydney , Sydney, NSW 2139 , Australia
| | - M Irish
- School of Psychology, The University of Sydney , 94 Mallett St, Sydney, NSW 2006 , Australia
- Brain and Mind Centre, The University of Sydney , Sydney, NSW 2050 , Australia
| | - O Piguet
- School of Psychology, The University of Sydney , 94 Mallett St, Sydney, NSW 2006 , Australia
- Brain and Mind Centre, The University of Sydney , Sydney, NSW 2050 , Australia
| |
Collapse
|
17
|
Xiao X, Chung PED, Xu M, Hu A, Ju Y, Yang X, Song J, Song J, Wang C, Zacksenhaus E, Liu S, He Z, Ben-David Y. A racemosin B derivative, C25, suppresses breast cancer growth via lysosomal membrane permeabilization and inhibition of autophagic flux. Biochem Pharmacol 2022; 201:115060. [PMID: 35513042 DOI: 10.1016/j.bcp.2022.115060] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 04/18/2022] [Accepted: 04/20/2022] [Indexed: 11/02/2022]
Abstract
Breast cancer is the most common malignancy among women worldwide. As conventional therapies are only partially successful in eradicating breast cancer, the development of novel strategies is a top priority. We previously showed that C25, a new racemosin B derivative, exerts its anti-cancer activity through inhibition of autophagy, but the underlying mechanism remained unknown. Here we show that C25 inhibits the growth of diverse breast cancer cell subtypes and effectively suppresses tumor progression in a xenotransplantation model of triple negative breast cancer. C25 acts as a lysosomotropic agent to induce lysosomal membrane permeabilization and inhibit autophagic flux, resulting in cathepsin release and cell death. In accordance, RNA sequencing and gene set enrichment analysis revealed that C25 induces pathways consistent with autophagy inhibition, cell cycle arrest and senescence. Interestingly, knockdown of TFEB or SQSTM1 reduced cell death induced by C25 treatment. Finally, we show that C25 synergizes with the chemo-therapeutics etoposide and paclitaxel to further limit breast cancer cell growth. Thus, C25 alone or in combination with other anti-neoplastic agents offers a novel therapeutic strategy for aggressive forms of breast cancer and possibly other malignancies.
Collapse
Affiliation(s)
- Xiao Xiao
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China; The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang 550014, PR China; Department of Immunology, Guizhou Medical University, Guiyang 550014, PR China
| | - Philip E D Chung
- Toronto General Research Institute, University Health Network, 67 College Street, Toronto, ON M5G 2M1, Canada; Department of Laboratory Medicine& Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Mei Xu
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China; The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang 550014, PR China
| | - Anling Hu
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China; The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang 550014, PR China
| | - Yangju Ju
- Toronto General Research Institute, University Health Network, 67 College Street, Toronto, ON M5G 2M1, Canada; Department of Laboratory Medicine& Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Xinmei Yang
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China; The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang 550014, PR China
| | - Jialei Song
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China; The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang 550014, PR China
| | - Jinrui Song
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China; The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang 550014, PR China
| | - Chunlin Wang
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China; The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang 550014, PR China
| | - Eldad Zacksenhaus
- Toronto General Research Institute, University Health Network, 67 College Street, Toronto, ON M5G 2M1, Canada; Department of Laboratory Medicine& Pathobiology, University of Toronto, Toronto, ON, Canada.
| | - Sheng Liu
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China; The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang 550014, PR China.
| | - Zhixu He
- Key Laboratory of Adult Stem Cell Transformation, Chinese Academy of Medical Sciences, Guiyang 550004, PR China; Department of Pediatrics, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, PR China.
| | - Yaacov Ben-David
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, PR China; The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang 550014, PR China.
| |
Collapse
|
18
|
Sanjeev A, Reddy NN, Bhaskar S, Rohini R, Raju AK, Kumar BV, Hu A, Reddy PM. Synthesis and Anticancer Activity of 3,4,5-Trimethoxycinnamamide-Tethered 1,2,3-Triazole Derivatives. Russ J Org Chem 2022. [DOI: 10.1134/s1070428022010122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
19
|
Varier KM, Dhandapani H, Liu W, Song J, Wang C, Hu A, Ben-David Y, Shen X, Li Y, Gajendran B. An immunotherapeutic approach to decipher the role of long non-coding RNAs in cancer progression, resistance and epigenetic regulation of immune cells. J Exp Clin Cancer Res 2021; 40:242. [PMID: 34303380 PMCID: PMC8305593 DOI: 10.1186/s13046-021-01997-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Accepted: 05/27/2021] [Indexed: 01/01/2023]
Abstract
Immunotherapeutic treatments are gaining attention due to their effective anti-tumor response. Particularly, the revolution of immune checkpoint inhibitors (ICIs) produces promising outcomes for various cancer types. However, the usage of immunotherapy is limited due to its low response rate, suggesting that tumor cells escape the immune surveillance. Rapid advances in transcriptomic profiling have led to recognize immune-related long non-coding RNAs (LncRNAs), as regulators of immune cell-specific gene expression that mediates immune stimulatory as well as suppression of immune response, indicating LncRNAs as targets to improve the efficacy of immunotherapy against tumours. Moreover, the immune-related LncRNAs acting as epigenetic modifiers are also under deep investigation. Thus, herein, is a summarised knowledge of LncRNAs and their regulation in the adaptive and innate immune system, considering their importance in autophagy and predicting putative immunotherapeutic responses.
Collapse
Affiliation(s)
- Krishnapriya M Varier
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550014, Guizhou Province, People's Republic of China.,The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, 550014, Guizhou Province, People's Republic of China.,School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, 550025, Guizhou Province, People's Republic of China
| | - Hemavathi Dhandapani
- Department of Molecular Oncology, Cancer Institute (WIA), Chennai, 600020, India.,Department of Biosciences & Bioengineering, Indian Institute of Technology Bombay, Mumbai, 400076, India
| | - Wuling Liu
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550014, Guizhou Province, People's Republic of China.,The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, 550014, Guizhou Province, People's Republic of China
| | - Jialei Song
- Guizhou University of Traditional Chinese Medicine, Guiyang, 550025, Guizhou Province, People's Republic of China
| | - Chunlin Wang
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550014, Guizhou Province, People's Republic of China.,The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, 550014, Guizhou Province, People's Republic of China
| | - Anling Hu
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550014, Guizhou Province, People's Republic of China.,The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, 550014, Guizhou Province, People's Republic of China
| | - Yaacov Ben-David
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550014, Guizhou Province, People's Republic of China. .,The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, 550014, Guizhou Province, People's Republic of China.
| | - Xiangchun Shen
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550014, Guizhou Province, People's Republic of China. .,The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, 550014, Guizhou Province, People's Republic of China. .,School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, 550025, Guizhou Province, People's Republic of China.
| | - Yanmei Li
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550014, Guizhou Province, People's Republic of China. .,The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, 550014, Guizhou Province, People's Republic of China.
| | - Babu Gajendran
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550014, Guizhou Province, People's Republic of China. .,The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, 550014, Guizhou Province, People's Republic of China. .,School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, 550025, Guizhou Province, People's Republic of China.
| |
Collapse
|
20
|
Hu M, Varier KM, Li Z, Qin X, Rao Q, Song J, Hu A, Hang Y, Yuan C, Gajendran B, Shu L, Wen M, Li Y, Liu H. A natural acylphloroglucinol triggered antiproliferative possessions in HEL cells by impeding STAT3 signaling and attenuating angiogenesis in transgenic zebrafish model. Biomed Pharmacother 2021; 141:111877. [PMID: 34323693 DOI: 10.1016/j.biopha.2021.111877] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 05/07/2021] [Accepted: 06/28/2021] [Indexed: 01/20/2023] Open
Abstract
Leukemia is responsible for a reason of death, globally. Even though there are several treatment regimens available in the clinics against this disease, a perfect chemotherapeutic agent for the same is still under investigation. Natural plant-derived secondary metabolites are used in clinics to treat leukemia for better benefits with reduced side-effects. Likely, several bioactive compounds from Callistemon sp. were reported for their bioactive benefits. Furthermore, acylphloroglucinol derivatives from Callistemon salignus, showed both antimicrobial and cytotoxic activities in various adherent human cancer cell lines. Thus, in the present study, a natural acylphloroglucinol (2,6-dihydroxy-4-methoxyisobutyrophenone, L72) was tested for its antiproliferative efficacy in HEL cells. The MTT and the cell cycle analysis study revealed that L72 treatment can offer antiproliferative effects, both time and dose-dependent manner, causing G2/M cell cycle arrest. The western blot analysis revealed that L72 treatment triggered intrinsic apoptotic machinery and activated p21. Likewise, L72 could downregulate the gene expressions of XIAP, FLT3, IDH2, and SOD2, which was demonstrated by qPCR analysis, thus promoting its antiproliferative action. The L72 could impede STAT3 expression, which was evidenced by insilico autodock analysis and western blot analysis using STAT3 inhibitor, Pimozide. The treatment of transgenic (Flk-1+/egfr+) zebrafish embryos resulted in the STAT3 gene inhibition, proving its anti-angiogenic effect, as well. Thus, the study revealed that L72 could act as an antiproliferative agent, by triggering caspase-dependent intrinsic apoptosis, reducing cell proliferation by attenuating STAT3, and activating an anti-angiogenic pathway via Flk-1inhibition.
Collapse
Affiliation(s)
- Mi Hu
- State Key Laboratory for Functions and Applications of Medicinal Plants/Department of Immunology, Guizhou Medical University, Guiyang 550014, PR China; The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang 550014, PR China; Key Laboratory of Regenerative Medicine of Guizhou Province, Guizhou Medical University, Guiyang 550004, Guizhou, PR China
| | - Krishnapriya M Varier
- State Key Laboratory for Functions and Applications of Medicinal Plants/Department of Immunology, Guizhou Medical University, Guiyang 550014, PR China; The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang 550014, PR China; School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang 550025, Guizhou, PR China
| | - Zhicao Li
- Key Laboratory of Regenerative Medicine of Guizhou Province, Guizhou Medical University, Guiyang 550004, Guizhou, PR China
| | - Xujie Qin
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, PR China
| | - Qing Rao
- State Key Laboratory for Functions and Applications of Medicinal Plants/Department of Immunology, Guizhou Medical University, Guiyang 550014, PR China; The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang 550014, PR China
| | - Jingrui Song
- State Key Laboratory for Functions and Applications of Medicinal Plants/Department of Immunology, Guizhou Medical University, Guiyang 550014, PR China; The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang 550014, PR China
| | - Anling Hu
- State Key Laboratory for Functions and Applications of Medicinal Plants/Department of Immunology, Guizhou Medical University, Guiyang 550014, PR China; The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang 550014, PR China
| | - Yubing Hang
- State Key Laboratory for Functions and Applications of Medicinal Plants/Department of Immunology, Guizhou Medical University, Guiyang 550014, PR China; The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang 550014, PR China
| | - Chunmao Yuan
- State Key Laboratory for Functions and Applications of Medicinal Plants/Department of Immunology, Guizhou Medical University, Guiyang 550014, PR China; The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang 550014, PR China
| | - Babu Gajendran
- State Key Laboratory for Functions and Applications of Medicinal Plants/Department of Immunology, Guizhou Medical University, Guiyang 550014, PR China; The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang 550014, PR China; School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang 550025, Guizhou, PR China.
| | - Liping Shu
- Key Laboratory of Regenerative Medicine of Guizhou Province, Guizhou Medical University, Guiyang 550004, Guizhou, PR China.
| | - Min Wen
- Key Laboratory of Regenerative Medicine of Guizhou Province, Guizhou Medical University, Guiyang 550004, Guizhou, PR China.
| | - Yanmei Li
- State Key Laboratory for Functions and Applications of Medicinal Plants/Department of Immunology, Guizhou Medical University, Guiyang 550014, PR China; The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang 550014, PR China.
| | - Haiyang Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, PR China.
| |
Collapse
|
21
|
Yu F, Gajendran B, Wang N, Sample KM, Liu W, Wang C, Hu A, Zacksenhaus E, Hao X, Ben-David Y. ERK activation via A1542/3 limonoids attenuates erythroleukemia through transcriptional stimulation of cholesterol biosynthesis genes. BMC Cancer 2021; 21:680. [PMID: 34107900 PMCID: PMC8191108 DOI: 10.1186/s12885-021-08402-6] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 05/24/2021] [Indexed: 01/04/2023] Open
Abstract
Background Cholesterol plays vital roles in human physiology; abnormal levels have deleterious pathological consequences. In cancer, elevated or reduced expression of cholesterol biosynthesis is associated with good or poor prognosis, but the underlying mechanisms are largely unknown. The limonoid compounds A1542 and A1543 stimulate ERK/MAPK by direct binding, leading to leukemic cell death and suppression of leukemia in mouse models. In this study, we investigated the downstream consequences of these ERK/MAPK agonists in leukemic cells. Methods We employed RNAseq analysis combined with Q-RT-PCR, western blot and bioinformatics to identify and confirm genes whose expression was altered by A1542 and A1543 in leukemic cells. ShRNA lentiviruses were used to silence gene expression. Cell culture and an animal model (BALB/c) of erythroleukemia induced by Friend virus were utilized to validate effects of cholesterol on leukemia progression. Results RNAseq analysis of A1542-treated cells revealed the induction of all 18 genes implicated in cholesterol biosynthesis. Expression of these cholesterol genes was blocked by cedrelone, an ERK inhibitor. The cholesterol inhibitor lovastatin diminished ERK/MAPK activation by A1542, thereby reducing leukemic cell death induced by this ERK1/2 agonist. Growth inhibition by cholesterol was observed both at the intracellular level, and when orally administrated into a leukemic mouse model. Both HDL and LDL also suppressed leukemogenesis, implicating these lipids as important prognostic markers for leukemia progression. Mechanistically, knockdown experiments revealed that the activation of SREBP1/2 by A1542-A1543 was responsible for induction of only a sub-set of cholesterol biosynthesis genes. Induction of other regulatory factors by A1542-A1543 including EGR1, AP1 (FOS + JUN) LDLR, IER2 and others may cooperate with SREBP1/2 to induce cholesterol genes. Indeed, pharmacological inhibition of AP1 significantly inhibited cholesterol gene expression induced by A1542. In addition to leukemia, high expression of cholesterol biosynthesis genes was found to correlate with better prognosis in renal cancer. Conclusions This study demonstrates that ERK1/2 agonists suppress leukemia and possibly other types of cancer through transcriptional stimulation of cholesterol biosynthesis genes. Supplementary Information The online version contains supplementary material available at 10.1186/s12885-021-08402-6.
Collapse
Affiliation(s)
- Fang Yu
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Province Science City, High Tech Zone, Baiyun District, Guiyang, 550014, Guizhou Province, People's Republic of China.,The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, 550014, Guizhou Province, People's Republic of China
| | - Babu Gajendran
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Province Science City, High Tech Zone, Baiyun District, Guiyang, 550014, Guizhou Province, People's Republic of China.,The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, 550014, Guizhou Province, People's Republic of China.,School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, 550025, Guizhou Province, People's Republic of China
| | - Ning Wang
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Province Science City, High Tech Zone, Baiyun District, Guiyang, 550014, Guizhou Province, People's Republic of China.,The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, 550014, Guizhou Province, People's Republic of China
| | - Klarke M Sample
- The National Health Commission's Key Laboratory of Immunological Pulmonary Disease, Guizhou Provincial People's Hospital, The Affiliated Hospital of Guizhou University, Guiyang, 550002, Guizhou Province, People's Republic of China
| | - Wuling Liu
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Province Science City, High Tech Zone, Baiyun District, Guiyang, 550014, Guizhou Province, People's Republic of China.,The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, 550014, Guizhou Province, People's Republic of China
| | - Chunlin Wang
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Province Science City, High Tech Zone, Baiyun District, Guiyang, 550014, Guizhou Province, People's Republic of China.,The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, 550014, Guizhou Province, People's Republic of China
| | - Anling Hu
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Province Science City, High Tech Zone, Baiyun District, Guiyang, 550014, Guizhou Province, People's Republic of China.,The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, 550014, Guizhou Province, People's Republic of China
| | - Eldad Zacksenhaus
- Department of Medicine, University of Toronto, Toronto, Ontario, Canada.,Division of Advanced Diagnostics, Toronto General Research Institute-University Health Network, Toronto, Ontario, Canada
| | - Xiaojiang Hao
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Province Science City, High Tech Zone, Baiyun District, Guiyang, 550014, Guizhou Province, People's Republic of China. .,The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, 550014, Guizhou Province, People's Republic of China.
| | - Yaacov Ben-David
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Province Science City, High Tech Zone, Baiyun District, Guiyang, 550014, Guizhou Province, People's Republic of China. .,The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, 550014, Guizhou Province, People's Republic of China.
| |
Collapse
|
22
|
Wang C, Sample KM, Gajendran B, Kapranov P, Liu W, Hu A, Zacksenhaus E, Li Y, Hao X, Ben-David Y. FLI1 Induces Megakaryopoiesis Gene Expression Through WAS/WIP-Dependent and Independent Mechanisms; Implications for Wiskott-Aldrich Syndrome. Front Immunol 2021; 12:607836. [PMID: 33717090 PMCID: PMC7953068 DOI: 10.3389/fimmu.2021.607836] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 01/19/2021] [Indexed: 12/12/2022] Open
Abstract
Wiskott–Aldrich Syndrome, WAS/WAVE, is a rare, X-linked immune-deficiency disease caused by mutations in the WAS gene, which together with its homolog, N-WASP, regulates actin cytoskeleton remodeling and cell motility. WAS patients suffer from microthrombocytopenia, characterized by a diminished number and size of platelets, though the underlying mechanism is not fully understood. Here, we identified FLI1 as a direct transcriptional regulator of WAS and its binding partner WIP. Depletion of either WAS or WIP in human erythroleukemic cells accelerated cell proliferation, suggesting tumor suppressor function of both genes in leukemia. Depletion of WAS/WIP also led to a significant reduction in the percentage of CD41 and CD61 positive cells, which mark committed megakaryocytes. RNAseq analysis revealed common changes in megakaryocytic gene expression following FLI1 or WASP knockdown. However, in contrast to FLI1, WASP depletion did not alter expression of late-stage platelet-inducing genes. N-WASP was not regulated by FLI1, yet its silencing also reduced the percentage of CD41+ and CD61+ megakaryocytes. Moreover, combined knockdown of WASP and N-WASP further suppressed megakaryocyte differentiation, indicating a major cooperation of these related genes in controlling megakaryocytic cell fate. However, unlike WASP/WIP, N-WASP loss suppressed leukemic cell proliferation. WASP, WIP and N-WASP depletion led to induction of FLI1 expression, mediated by GATA1, and this may mitigate the severity of platelet deficiency in WAS patients. Together, these results uncover a crucial role for FLI1 in megakaryocyte differentiation, implicating this transcription factor in regulating microthrombocytopenia associated with Wiskott–Aldrich syndrome.
Collapse
Affiliation(s)
- Chunlin Wang
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, China.,The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, China
| | - Klarke M Sample
- The National Health Commission's Key Laboratory of Immunological Pulmonary Disease, Guizhou Provincial People's Hospital, The Affiliated Hospital of Guizhou University, Guiyang, China
| | - Babu Gajendran
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, China.,The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, China
| | - Philipp Kapranov
- School of Biomedical Sciences, Institute of Genomics, Huaqiao University, Xiamen, China
| | - Wuling Liu
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, China.,The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, China
| | - Anling Hu
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, China.,The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, China
| | - Eldad Zacksenhaus
- Department of Medicine, University of Toronto, Toronto, ON, Canada.,Division of Advanced Diagnostics, Toronto General Research Institute-University Health Network, Toronto, ON, Canada
| | - Yanmei Li
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, China.,The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, China
| | - Xiaojiang Hao
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, China.,The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, China
| | - Yaacov Ben-David
- State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, China.,The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, China
| |
Collapse
|
23
|
Hu A, Shuai Z, Liu J, Huang B, Luo Y, Deng J, Liu J, Yu L, Li L, Xu S. Ginsenoside Rg1 prevents vascular intimal hyperplasia involved by SDF-1α/CXCR4, SCF/c-kit and FKN/CX3CR1 axes in a rat balloon injury. J Ethnopharmacol 2020; 260:113046. [PMID: 32504784 DOI: 10.1016/j.jep.2020.113046] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 05/24/2020] [Accepted: 05/28/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Panax ginseng C. A. Mey. is a traditional tonic that has been used for thousands of years, and has positive effects on vascular diseases. Ginsenoside Rg1 (GS-Rg1) is one of the active ingredients of Panax ginseng C. A. Mey. and has been shown to have beneficial effects against ischemia/reperfusion injury. Our previously study has found that GS-Rg1 can mobilize bone marrow stem cells and inhibit vascular smooth muscle proliferation and phenotype transformation. However, pharmacological effects and mechanism of GS-Rg1 in inhibiting intimal hyperplasia is still unknown. AIM OF THE STUDY This study was aimed to investigate whether GS-Rg1 prevented vascular intimal hyperplasia, and the involvement of stromal cell-derived factor-1α (SDF-1α)/CXCR4, stem cell factor (SCF)/c-kit and fractalkine (FKN)/CX3CR1 axes. MATERIALS AND METHODS Rats were operated with carotid artery balloon injury. The treatment groups were injected with 4, 8 and 16 mg/kg of GS-Rg1 for 14 days. The degree of intimal hyperplasia was evaluated by histopathological examination. The expression of α-SMA (α-smooth muscle actin) and CD133 were detected by double-label immunofluorescence. Serum levels of SDF-1α, SCF and soluble FKN (sFKN) were detected by enzyme linked immunosorbent assay (ELISA). The protein expressions of SCF, SDF-1α and FKN, as well as the receptors c-kit, CXC chemokine receptor type 4 (CXCR4) and CX3C chemokine receptor type 1 (CX3CR1) were detected by immunochemistry. RESULTS GS-Rg1 reduced intimal hyperplasia by evidence of the values of NIA, the ratio of NIA/MA, and the ratio of NIA/IELA and the ratio of NIA/LA, especially in 16 mg/kg group. Furthermore, GS-Rg1 8 mg/kg group and 16 mg/kg group decreased the protein expressions of the SDF-1α/CXCR4, SCF/c-kit and FKN/CX3CR1 axes in neointima, meanwhile GS-Rg1 8 mg/kg group and 16 mg/kg group also attenuated the expressions of SDF-1α, SCF and sFKN in serum. In addition, the expression of α-SMA and CD133 marked smooth muscle progenitor cells (SMPCs) was decreased after GS-Rg1 treatment. CONCLUSIONS GS-Rg1 has a positive effect on inhibiting vascular intimal hyperplasia, and the underlying mechanism is related to inhibitory expression of SDF-1α/CXCR4, SCF/c-kit and FKN/CX3CR1 axes.
Collapse
MESH Headings
- Angioplasty, Balloon
- Animals
- CX3C Chemokine Receptor 1/metabolism
- Carotid Artery Injuries/etiology
- Carotid Artery Injuries/metabolism
- Carotid Artery Injuries/pathology
- Carotid Artery Injuries/prevention & control
- Carotid Artery, Common/drug effects
- Carotid Artery, Common/metabolism
- Carotid Artery, Common/pathology
- Chemokine CX3CL1/metabolism
- Chemokine CXCL12/metabolism
- Disease Models, Animal
- Ginsenosides/pharmacology
- Hyperplasia
- Male
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/injuries
- Muscle, Smooth, Vascular/metabolism
- Muscle, Smooth, Vascular/pathology
- Neointima
- Proto-Oncogene Proteins c-kit/metabolism
- Rats, Sprague-Dawley
- Receptors, CXCR4/metabolism
- Signal Transduction
- Stem Cell Factor/metabolism
Collapse
Affiliation(s)
- Anling Hu
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563000, China; State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, Guizhou, 550025, China; The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, Guizhou, 550014, China.
| | - Zhiqin Shuai
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563000, China; Department of Pharmacology, School of Pharmacy, Zunyi Medical University, Zunyi, Guizhou, 563000, China.
| | - Jiajia Liu
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563000, China; Department of Pharmacology, School of Pharmacy, Zunyi Medical University, Zunyi, Guizhou, 563000, China.
| | - Bo Huang
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563000, China.
| | - Yunmei Luo
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563000, China.
| | - Jiang Deng
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563000, China.
| | - Jie Liu
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563000, China.
| | - Limei Yu
- State Key Laboratory of Cell Engineering of Guizhou Province, The Affiliated Hospital of Zunyi Medical College, Zunyi, Guizhou, 563003, China.
| | - Lisheng Li
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563000, China.
| | - Shangfu Xu
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563000, China; Department of Pharmacology, School of Pharmacy, Zunyi Medical University, Zunyi, Guizhou, 563000, China; State Key Laboratory of Cell Engineering of Guizhou Province, The Affiliated Hospital of Zunyi Medical College, Zunyi, Guizhou, 563003, China.
| |
Collapse
|
24
|
Chen W, Shen J, Zhang Y, Hu A, Liang J, Ma L, Yu X, Huang Y. A randomised controlled trial of fibrinogen concentrate during scoliosis surgery. Anaesthesia 2020; 75:1476-1481. [PMID: 32500569 DOI: 10.1111/anae.15124] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/06/2020] [Indexed: 01/28/2023]
Abstract
Bleeding and blood transfusion are common after scoliosis surgery. Fibrinogen is essential for blood clot formation and depletes quickly during haemorrhage. We randomly allocated 102 children 12-18 years old having surgery for idiopathic scoliosis, 51 to intra-operative fibrinogen concentrate 30 mg.kg-1 (maximum 2 g) and 51 to saline placebo. Fibrinogen reduced peri-operative blood loss by a median (95%CI) volume of 155 (5-320) ml, from a median (IQR [range]) of 1035 (818-1420 [400-3030]) ml to 885 (755-1155 [270-2645]) ml, p = 0.04. Seven and four children received allogeneic red blood cell transfusion after fibrinogen and placebo, respectively, p = 0.34. There were no side-effects.
Collapse
Affiliation(s)
- W Chen
- Department of Anesthesiology, Peking Union Medical College Hospital, Beijing, China
| | - J Shen
- Department of Orthopedics Surgery, Peking Union Medical College Hospital, Beijing, China
| | - Y Zhang
- Medical Research Center, Peking Union Medical College Hospital, Beijing, China
| | - A Hu
- Department of Anesthesiology, Peking Union Medical College Hospital, Beijing, China
| | - J Liang
- Department of Orthopedics Surgery, Peking Union Medical College Hospital, Beijing, China
| | - L Ma
- Department of Anesthesiology, Peking Union Medical College Hospital, Beijing, China
| | - X Yu
- Department of Anesthesiology, Peking Union Medical College Hospital, Beijing, China
| | - Y Huang
- Department of Anesthesiology, Peking Union Medical College Hospital, Beijing, China
| |
Collapse
|
25
|
Hu A, Nevskaya T, Baron M, Pope J. FRI0245 PULMONARY ARTERIAL HYPERTENSION IN SYSTEMIC SCLEROSIS IS NEARLY ALWAYS ACCOMPANIED BY A LOW DIFFUSING CAPACITY. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.3394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Scleroderma (systemic sclerosis; SSc) has high morbidity and mortality. Pulmonary hypertension (PH) and pulmonary arterial hypertension (PAH) is common with a high mortality (1). SSc patients are screened with pulmonary function tests (diffusing capacity of the lung for carbon monoxide; DLCO) (2).Objectives:The DLCO%predicted was analyzed comparing patients with and without PAH to determine if it is always low at time of PAH diagnosis.Methods:The Canadian Scleroderma Research Group (CSRG) database was used containing more than 1300 SSc patients with a mean disease duration of 8 years. All patients with at least one follow up visit and DLCO recorded at least twice were eligible for enrolment into this nested case control study. Diagnosis of PH was verified using several algorithms within the database including R heart catheterization, use of PH medications and physician response of ‘yes’ to question has this patient been diagnosed with pulmonary hypertension. Sensitivity, specificity and positive (PPV) and negative predictive values (NPV) were calculated for DLC0%predicted <50% and presence of PH/PAH.Results:At time of PH diagnosis, the mean DLCO% predicted was 47% (N=30) vs no PH 73% (N=960) P<0.0001, and proven documented PAH also showed the differences (PAH, N=22 DLCO% predicted 51% vs. PAH negative (N=968) DLCO% pred 72%, P<0.0001) (Table 1). The OR of a DLCO%predicted less than 60 was 4.7 for PAH and 7.6 for PH (both P<0.001) and even higher if DLCO<50% (OR 11.5 for PH and 7.6 for PAH). Table 2 shows the PPV of DLCO at varying levels.Table 1.DLCO comparison between PH+ and PH- SSc patients and between PAH+ and PAH- SSc patients, at the time of diagnosis.PH+(n=30)PH-(n=960)P-valuePAH+(n=22)PAH- (n=968)P-valuemean±SD47.17±17.5372.74±20.79<0.000151.23±17.5572.44±20.99<0.0001Range18-8113-14725-8113-147Table 2.Sensitivity, specificity and predictive values in SSc-PH and -PAH for DLCO at various cut points.ORPPVSpecificityNPVSensitivityDLCO<50%11.5 (CI 95% 5.4-24.8),p<0.000113.2%87.0%98.7%63.3%PHDLCO<60%7.6 (CI 95% 3.3-17.2), p<0.00017.9%73.3%98.9%73.3%DLCO>80%0.06 (CI 95% 0.008-0.46), p=0.0070.3%64.5%95.5%3.3%DLCO<50%7.6 (CI 95% 3.2-17.9), p<0.00018.3%86.4%98.8%54.5%PAHDLCO<60%4.7 (1.9-11.3), p<0.0015.0%72.7%98.9%63.6%DLCO>80%0.1 (0.01-0.7), p=0.0180.3%64.8%96.8%4.5%Conclusion:A low DLCO is associated with a high odds of PH/PAH in SSc and the NPV is very high at both DLCO<50% predicted and <60% predicted. This may aid in determining who should recieve a right heart catheterization in SSc patients.References:[1]Mukerjee D et al (2003) Prevalence and outcome in systemic sclerosis associated pulmonary arterial hypertension: application of a registry approach. Ann Rheum Dis 62(11):1088-93[2]Khanna D et al (2013) Recommendations for screening and detection of connective tissue disease-associated pulmonary arterial hypertension. Arthritis Rheum 65(12):3194-201Disclosure of Interests:None declared
Collapse
|
26
|
Jia W, Liu J, Hu R, Hu A, Tang W, Li L, Li J. Xiaochaihutang Improves the Cortical Astrocyte Edema in Thioacetamide-Induced Rat Acute Hepatic Encephalopathy by Activating NRF2 Pathway. Front Pharmacol 2020; 11:382. [PMID: 32372950 PMCID: PMC7179068 DOI: 10.3389/fphar.2020.00382] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Accepted: 03/12/2020] [Indexed: 12/15/2022] Open
Abstract
Oxidative stress induced by high ammonia, which leads to astrocyte edema, is the key to acute hepatic encephalopathy (AHE). Nuclear factor erythroid 2-related factor 2 (NRF2) has been implicated in oxidative stress, but the mechanism of NRF2 against ammonia-induced astrocytes edema has not been fully studied. We confirmed that the NRF2 pathway is related to brain edema caused by AHE and found that Xiaochaihutang (XCHT) could effectively activate the NRF2 pathway to treat AHE. The model of AHE was established with thioacetamide (TAA) in rats. Rat behaviors were observed, brain water content, blood ammonia levels, glutamine synthetase (GS), malondialdehyde (MDA), and total superoxide dismutase (T-SOD) were determined after XCHT treatment. Furthermore, the expression of NRF2 pathway proteins and mRNA, glial fibrillary acidic protein (GFAP) and aquaporins 4 (AQP4) were examined. In order to determine whether XCHT has a direct effect on cerebral edema caused by high ammonia, we examined the effect of XCHT compound serum on cortical astrocytes in the presence of ammonia, through microscopic observation and immunofluorescence (IF). Results showed that AHE induced by TAA changed the behavior of the rats, and increased brain water content, blood ammonia levels, GS and MDA content meanwhile decreasing T-SOD, but these symptoms were improved by treatment with XCHT. XCHT protected brain edema by activating the NRF2 pathway and increasing the expression of downstream proteins and genes. Astrocytes treated with 5 mM ammonia also showed an increase in the AQP4 protein expression but a decrease in XCHT compound serum and ammonia-induced cell edema groups. This study demonstrates that the NRF2 pathway is involved in the brain edema in AHE, and XCHT may represent a useful prescription for the treatment of AHE.
Collapse
Affiliation(s)
- Weiyi Jia
- Key Laboratory of Infectious Disease and Biosafety, and Provincial Department of Education, Zunyi Medical University, Zunyi, China.,Research Center for Medicine and Biology, Zunyi Medical University, Zunyi, China
| | - Jiajia Liu
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, China
| | - Rui Hu
- Key Laboratory of Brain Science, Zunyi Medical University, Zunyi, China
| | - Anling Hu
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnocentric of Ministry of Education, Zunyi Medical University, Zunyi, China
| | - Weiwei Tang
- Department of Pathophysiology, Basic Medical College, Zunyi Medical University, Zunyi, China
| | - Lijuan Li
- Department of Pathophysiology, Basic Medical College, Zunyi Medical University, Zunyi, China
| | - Jin Li
- Key Laboratory of Infectious Disease and Biosafety, and Provincial Department of Education, Zunyi Medical University, Zunyi, China.,Research Center for Medicine and Biology, Zunyi Medical University, Zunyi, China
| |
Collapse
|
27
|
Abstract
The gut is composed of a single layer of intestinal epithelial cells and plays important roles in the digestion and absorption of nutrients, immune and barrier functions and amino acid metabolism. Weaning stress impairs piglet intestinal epithelium structural and functional integrities, which results in reduced feed intake, growth rates and increased morbidity and mortality. Several measures are needed to maintain swine gut development and growth performance after weaning stress. A large body of evidence indicates that, in weaning piglets, glutamine, a functional amino acid, may improve growth performance and intestinal morphology, reduce oxidative damage, stimulate enterocyte proliferation, modulate cell survival and death and enhance intestinal paracellular permeability. This review focuses on the effects of glutamine on intestinal health in piglets. The aim is to provide evidentiary support for using glutamine as a feed additive to alleviate weaning stress.
Collapse
Affiliation(s)
- F J Ji
- Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, Laboratory of Animal Nutrition and Human Health, College of Life Sciences, Hunan Normal University, 36 Lushan Road, Changsha 410081, People's Republic of China
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, 4 West Xueyuan Road, Haikou 571101, People's Republic of China
- Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process; National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Institute of Subtropical Agriculture, Chinese Academy of Sciences, 644 Yuanda 2nd Road, Changsha 410125, People's Republic of China
| | - L X Wang
- Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, Laboratory of Animal Nutrition and Human Health, College of Life Sciences, Hunan Normal University, 36 Lushan Road, Changsha 410081, People's Republic of China
- Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process; National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Institute of Subtropical Agriculture, Chinese Academy of Sciences, 644 Yuanda 2nd Road, Changsha 410125, People's Republic of China
| | - H S Yang
- Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, Laboratory of Animal Nutrition and Human Health, College of Life Sciences, Hunan Normal University, 36 Lushan Road, Changsha 410081, People's Republic of China
- Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process; National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Institute of Subtropical Agriculture, Chinese Academy of Sciences, 644 Yuanda 2nd Road, Changsha 410125, People's Republic of China
| | - A Hu
- Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, Laboratory of Animal Nutrition and Human Health, College of Life Sciences, Hunan Normal University, 36 Lushan Road, Changsha 410081, People's Republic of China
| | - Y L Yin
- Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, Laboratory of Animal Nutrition and Human Health, College of Life Sciences, Hunan Normal University, 36 Lushan Road, Changsha 410081, People's Republic of China
- Hunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic Process; National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Institute of Subtropical Agriculture, Chinese Academy of Sciences, 644 Yuanda 2nd Road, Changsha 410125, People's Republic of China
- Academician Workstation of Changsha Medical University, 1501 Leifeng Road, Changsha 410219, People's Republic of China
| |
Collapse
|
28
|
Wang H, Wang S, Liu P, Ma Y, Hu A, Sun C, Dong J. Comparison of dysregulated long noncoding RNAs in lung adenocarcinoma and spinal metastasis: A genome-wide analysis. Neoplasma 2019; 66:930-938. [PMID: 31390868 DOI: 10.4149/neo_2018_181111n854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Accepted: 05/09/2019] [Indexed: 11/08/2022]
Abstract
Long noncoding RNAs (lncRNAs) have been shown to play crucial roles in cancer metastasis, yet the lncRNAs landscape of lung adenocarcinoma has not been completely characterized. The aim of this study was to assess the expression profile and potential function of lncRNA in lung adenocarcinoma and in spinal metastasis (SM). A genome-wide microarray analysis was conducted on lung adenocarcinoma and SM tissue from ten Chinese patients. A total of 3,345 differentially expressed lncRNAs were detected. Of those, 761 lncRNAs were upregulated and 2,584 were downregulated (fold-change >2.0, p<0.05). These differentially expressed lncRNAs were not evenly distributed among the chromosomes of human genome. Volcano plots of these differentially expressed lncRNAs revealed large variability in lncRNAs expression among 12 patients, indicating that certain lncRNAs may play a positive role in SM of lung adenocarcinoma. Gene Ontology enrichment and pathway analysis identified several remarkably dysregulated biological pathways that affect cell adhesion and the interaction of cytokines and cytokine receptors. Co-expression network analysis showed that 9,458 lncRNAs had verified cis- and trans- target genes. All 2,317 cis targeted genes were confirmed to be differentially expressed and influenced by dysregulated lncRNAs in SM of lung adenocarcinoma. Top ten markedly dysregulated lncRNAs and mRNAs were verified from the co-expression network. In conclusion, this study was a genome-wide survey of dysregulated lncRNAs and corresponding mRNAs that comprise co-regulation networks for SM and lung adenocarcinoma tissues. These dysregulated lncRNAs and mRNA networks could be used as therapeutic gene targets to prevent SM of lung adenocarcinoma and to predictively evaluate treatment efficacy.
Collapse
Affiliation(s)
- H Wang
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - S Wang
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - P Liu
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Y Ma
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - A Hu
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - C Sun
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - J Dong
- Department of Orthopedic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| |
Collapse
|
29
|
Huang B, Hu P, Hu A, Li Y, Shi W, Huang J, Jiang Q, Xu S, Li L, Wu Q. Naringenin attenuates carotid restenosis in rats after balloon injury through its anti-inflammation and anti-oxidative effects via the RIP1-RIP3-MLKL signaling pathway. Eur J Pharmacol 2019; 855:167-174. [PMID: 31075238 DOI: 10.1016/j.ejphar.2019.05.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [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: 12/05/2018] [Revised: 05/02/2019] [Accepted: 05/03/2019] [Indexed: 12/12/2022]
Abstract
Vascular restenosis has been proved as the major drawback of percutaneous coronary interventions, which is characterized by neointimal hyperplasia. Naringenin is a kind of natural dihydroflavonoid with a variety of beneficial effects, including anti-oxidative, anti-microbial, anti-cancer and anti-inflammatory properties. However, the effects of naringenin on vascular restenosis remain unclear. This study aimed at investigating the effect and the mechanisms of naringenin on balloon injury (BI)-induced neointimal hyperplasia in the common carotid artery (CCA). BI model of CCA was induced by a 2F Forgarty catheter balloon, and the pathological process of neointimal hyperplasia was noted at 1, 3, 7 and 14 days. Neointimal hyperplasia in CCA increased significantly, especially on day 14 after BI. Subsequently, naringenin (25, 50, 100 mg/kg/d) or volume-matched vehicle were administered to the rats by gavage daily for 14 days. Ultrasound detection and histopathological examination showed that naringenin dose-dependently inhibited BI-induced intimal hyperplasia, as evidenced by reducing imima-media thickness (IMT), neointimal area (NIA), neointimal area/media area (NIA/MA) and neointimal area/internal elastic area (NIA/IELA). Immunohistochemistry revealed that naringenin decreased the expression of proliferating cell nuclear antigen (PCNA) and the cluster of differentiation 163 (CD163). ELISA indicated naringenin significantly reduced the overproduction of IL-1β and TNF-α. By detecting the activity of superoxide dismutase and the level of malondialdehyde and glutathione, we found that naringenin attenuated BI-induced oxidative stress. Additionally, RT-qPCR demonstrated that receptor-interacting protein 1 (RIP1), RIP3 and mixed lineage kinase domain-like (MLKL) mRNA expression were further down-regulated by naringenin treatment. These results suggested that naringenin can suppress BI-induced vascular neointimal hyperplasia through anti-inflammation and anti-oxidative stress, which may be related to the regulation of RIP1-RIP3-MLKL signaling pathway.
Collapse
Affiliation(s)
- Bo Huang
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563009, China
| | - Pei Hu
- Department of Pharmacy, Zunyi Maternal and Child Health Care Hospital, Zunyi, Guizhou, 563000, China
| | - Anling Hu
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563009, China
| | - Yingying Li
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563009, China
| | - Wanlan Shi
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563009, China
| | - Juan Huang
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563009, China
| | - Qingsong Jiang
- Department of Pharmacology, Chongqing Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing Medical University, Chongqing, 400016, China
| | - Shangfu Xu
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563009, China
| | - Lisheng Li
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563009, China
| | - Qin Wu
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, 563009, China.
| |
Collapse
|
30
|
Hu A, Narula N. A98 SURVEILLANCE COLONOSCOPIES IN ULCERATIVE COLITIS: DOES IT MAKE A DIFFERENCE? J Can Assoc Gastroenterol 2019. [DOI: 10.1093/jcag/gwz006.097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- A Hu
- Department of Gastroenterology, McMaster University, Toronto, ON, Canada
| | - N Narula
- McMaster University, Hamilton, ON, Canada
| |
Collapse
|
31
|
Hu A, Huang J, Li S, Gao Y, Wu L, Deng J, Liu J, Gong Q, Li L, Xu S. Involvement of stromal cell-derived factor-1α (SDF-1α), stem cell factor (SCF), fractalkine (FKN) and VEGF in TSG protection against intimal hyperplasia in rat balloon injury. Biomed Pharmacother 2019; 110:887-894. [DOI: 10.1016/j.biopha.2018.12.030] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 12/03/2018] [Accepted: 12/05/2018] [Indexed: 01/17/2023] Open
|
32
|
Hu A, Zhang J, Chen XJ, Millner JP, Chang SH, Bowatte S, Hou FJ. The composition, richness, and evenness of seedlings from the soil seed bank of a semi-arid steppe in northern China are affected by long-term stocking rates of sheep and rainfall variation. Rangel J 2019. [DOI: 10.1071/rj18025] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The soil seed bank has a large influence on the potential for grassland restoration. This study aimed to characterise the composition, density, richness, and evenness of seedlings emerging from the soil seed bank under different sheep stocking rates, in a summer grazing system, in semi-arid China. Soil was sampled in 2015, a year with extreme drought conditions and in 2016, a normal rainfall year. The soil seed bank was assessed by measuring seedling emergence under laboratory conditions. Comprising 16 species, 85.4% of the seedlings were concentrated within a depth of 0–5cm. Drought significantly reduced the density and richness of the seedlings. Grazing increased the richness of seedlings by increasing the richness of aboveground species, and grazing significantly reduced the evenness of the seedlings by reducing the evenness of aboveground species. Drought significantly reduced the similarities between the seedlings and the aboveground species, whereas grazing increased similarities in both years. This study revealed that the density and richness of seedlings were higher in higher stocking rate in drought year. We conclude that negative effects on density, richness and evenness of the seedlings caused by drought can be overcome by rotational grazing especially at higher stocking rate.
Collapse
|
33
|
Yang T, Zhao YL, Tong Y, Jiao ZB, Wei J, Cai JX, Han XD, Chen D, Hu A, Kai JJ, Lu K, Liu Y, Liu CT. Multicomponent intermetallic nanoparticles and superb mechanical behaviors of complex alloys. Science 2018; 362:933-937. [DOI: 10.1126/science.aas8815] [Citation(s) in RCA: 600] [Impact Index Per Article: 100.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Revised: 07/31/2018] [Accepted: 10/10/2018] [Indexed: 01/17/2023]
Abstract
Alloy design based on single–principal-element systems has approached its limit for performance enhancements. A substantial increase in strength up to gigapascal levels typically causes the premature failure of materials with reduced ductility. Here, we report a strategy to break this trade-off by controllably introducing high-density ductile multicomponent intermetallic nanoparticles (MCINPs) in complex alloy systems. Distinct from the intermetallic-induced embrittlement under conventional wisdom, such MCINP-strengthened alloys exhibit superior strengths of 1.5 gigapascals and ductility as high as 50% in tension at ambient temperature. The plastic instability, a major concern for high-strength materials, can be completely eliminated by generating a distinctive multistage work-hardening behavior, resulting from pronounced dislocation activities and deformation-induced microbands. This MCINP strategy offers a paradigm to develop next-generation materials for structural applications.
Collapse
|
34
|
O'Brien E, Shi C, Deng J, Diao C, Clarkson M, Shrivastava V, Adijian A, Hu A, Chiu M, Gwilym B, Hellmich A, Malozzi C, Batulan Z, Gertoffer W, Chen YX. HSP27 immunization attenuates atherogenesis by markedly reducing plasma PCSK9 and cholesterol levels. Atherosclerosis 2018. [DOI: 10.1016/j.atherosclerosis.2018.06.451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
35
|
George J, Hu A, Patel K, Thakrar J, Al-Mukhtar A. Improving antibiotic compliance: The five-audit junior-led experience. Int J Surg 2018. [DOI: 10.1016/j.ijsu.2018.05.183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
36
|
Naraoka Y, Yamaguchi T, Hu A, Akimoto K, Kobayashi H. SHORT CHAIN FATTY ACIDS UPREGULATE ADIPOKINE PRODUCTION IN TYPE 2 DIABETES-DERIVED HUMAN ADIPOCYTES. Acta Endocrinol (Buchar) 2018; 14:287-293. [PMID: 31149273 PMCID: PMC6525780 DOI: 10.4183/aeb.2018.287] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
PURPOSE Short chain fatty acids (SCFAs) play a major regulatory role in adipocyte function and metabolism. The aim of this study was to investigate the effects of SCFAs on adiponectin and leptin expression in adipocytes, and also to determine whether the effects of SCFA treatment in visceral adipocytes obtained from healthy subjects are different relative to the effects in adipocytes from patients with type 2 diabetes. MATERIALS AND METHODS Human pericardiac preadipocytes and human pericardiac preadipocytes type 2 diabetes were differentiated into adipocytes for 21 days in 48-well plates. After differentiation, two kinds of mature adipocytes, human pericardiac adipocytes (HPAd) and human pericardiac adipocytes-type 2 diabetes (HPAd-T2D) were incubated with or without 1 mM of acetic acid (AA), butyrate acid (BA), and propionic acid (PA). After 48 hours of incubation, intracellular lipid accumulation was measured using oil red staining. In addition, mRNA levels of adiponectin, leptin and Peroxisome Proliferator-Activated Receptor γ (PPARγ) were determined by Real-Time PCR system. RESULTS In HPAd, SCFA supplementation did not inhibit lipid accumulation. By contrast, both AA (p<0.01) and PA (p<0.01) significantly inhibited lipid accumulation in HPAd-T2D. Regarding mRNA levels of adiponectin, no significant changes were found in HPAd, while all three types of SCFAs significantly increased (p<0.05) adiponectin expression in HPAd-T2D. Leptin mRNA expression levels were significantly increased by treatment with all three types of SCFAs in both HPAd (p<0.05) and HPAd-T2D (p<0.05). CONCLUSION SCFAs inhibited lipid droplet accumulation and increased mRNA expression of adiponectin and leptin in T2D-derived adipocytes.
Collapse
Affiliation(s)
- Y. Naraoka
- Juntendo University, Graduate School of Medicine, Department of Hospital Administration, Tokyo, Japan
| | - T. Yamaguchi
- Juntendo University, Graduate School of Medicine, Center for Advanced Kampo Medicine and Clinical Research, Tokyo, Japan
| | - A. Hu
- Juntendo University, Graduate School of Medicine, Center for Advanced Kampo Medicine and Clinical Research, Tokyo, Japan
| | - K. Akimoto
- Juntendo University, Graduate School of Medicine, Department of Hospital Administration, Tokyo, Japan
| | - H. Kobayashi
- Juntendo University, Graduate School of Medicine, Department of Hospital Administration, Tokyo, Japan
- Juntendo University, Graduate School of Medicine, Center for Advanced Kampo Medicine and Clinical Research, Tokyo, Japan
| |
Collapse
|
37
|
Hu A, Yuan Y, Leontiadis G, Tse F. A330 PREVENTION OF POST-ERCP PANCREATITIS: DO PROTEASE INHIBITORS HAVE A ROLE? J Can Assoc Gastroenterol 2018. [DOI: 10.1093/jcag/gwy009.330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- A Hu
- McMaster University, Toronto, ON, Canada
| | - Y Yuan
- McMaster University, Hamilton, ON, Canada
| | | | - F Tse
- McMaster University, Hamilton, ON, Canada
| |
Collapse
|
38
|
Miao MZ, Wang B, Wu D, Zhang S, Wong S, Shi O, Hu A, Mao L, Fang B. Temporomandibular joint positional change accompanies post-surgical mandibular relapse-A long-term retrospective study among patients who underwent mandibular advancement. Orthod Craniofac Res 2017; 21:33-40. [DOI: 10.1111/ocr.12209] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/06/2017] [Indexed: 12/16/2022]
Affiliation(s)
- M. Z. Miao
- Department of Oral and Craniofacial Health Sciences; UNC School of Dentistry; Chapel Hill NC USA
| | - B. Wang
- Department of Oral and Craniomaxillofacial Surgery; Ninth People's Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - D. Wu
- Department of Biostatistics; School of Dentistry; Department of Periodontology; UNC School of Public Health; Chapel Hill NC USA
| | - S. Zhang
- Department of Oral and Craniofacial Health Sciences; Center for Oral and Systemic Diseases; UNC School of Dentistry; Chapel Hill NC USA
| | - S. Wong
- Department of Oral and Craniofacial Health Sciences; Department of Orthodontics; UNC School of Dentistry; Chapel Hill NC USA
| | - O. Shi
- Shanghai Jiao Tong University School of Public Health; Shanghai China
| | - A. Hu
- Department of Oral and Craniofacial Health Sciences; UNC School of Dentistry; Chapel Hill NC USA
| | - L. Mao
- Department of Oral and Craniomaxillofacial Surgery; Ninth People's Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - B. Fang
- Department of Oral and Craniomaxillofacial Surgery; Ninth People's Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| |
Collapse
|
39
|
Yang YY, Liu H, Hu A, Zou Y, Xing B, Yao Y, Wang RZ, Lian W. [The surgery of thyrotropin-secreting pituitary adenomas and the significance of thyroid stimulating hormone level in follow-up]. Zhonghua Yi Xue Za Zhi 2016; 96:3825-3828. [PMID: 28057099 DOI: 10.3760/cma.j.issn.0376-2491.2016.47.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the clinical characteristics of thyrotropin-secreting pituitary adenomas and the effect of the transsphenoidal approach of procedure with/without drug treatment for thyrotropin-secreting pituitary adenomas, and to investigate the correlation between the prognosis of thyrotropin-secreting pituitary adenomas and the postoperative level of thyroid stimulating hormone (TSH). Methods: A total of 45 patients with thyrotropin-secreting pituitary adenoma who hospitalized in Peking Union Medical College Hospital from 2000 to 2015 were enrolled in the study.We collected the clinical features, hormone levels, imaging findings, treatment and follow-up data of these patients. Results: The average age of the patients was 40.26 years old and the average disease duration was 5.83 years.Among them, 8 cases were microadenomas and 37 cases were macroadenoma.Thirty patients were treated with somatostatin analogues before surgery.TSH level was significantly decreased after operation (P=0.012). All of them had done the pituitary surgery, including 44 transsphenoidal surgery and 1 subfrontal surgery that had recurrence one year after the transsphenoidal surgery.The TSH level of 34 cases went back to normal on the third day after surgery.The remission rates on three months and one year after surgery in patients with TSH level<0.1 mIU/L on postoperative day (POD) 3 were significantly higher than those in patients with TSH level>0.1 mIU/L on POD3.As well as the remission rates on three months and one year after surgery in patients with TSH level normal on postoperative one month were significantly higher than those in patients with TSH level abnormal on postoperative one month. Conclusions: TSH level of postoperative one month could be used to predict prognosis and monitor recurrence.
Collapse
Affiliation(s)
- Y Y Yang
- Department of Neurosurgery, Peking Union Medical College (PUMC) Hospital, China Academy of Medical Sciences & PUMC, Beijing 100730, China
| | | | | | | | | | | | | | | |
Collapse
|
40
|
Liu T, Liang Q, Hu A, Feng G, Wang N, Peng X, Baudouin C, Labbé A. Elimination of blinding trachoma in China. J Fr Ophtalmol 2016; 39:836-842. [PMID: 27865692 DOI: 10.1016/j.jfo.2016.10.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 09/28/2016] [Accepted: 10/04/2016] [Indexed: 10/20/2022]
Abstract
OBJECTIVE To present the change in the prevalence of blindness caused by trachoma between 1987 and 2006 by secondary data analysis based on two China National Sample Surveys on Disability (CNSSD). METHODS Secondary data analysis was performed on two China National Sample Surveys on Disability (CNSSD), which were national representative household surveys conducted in 1987 and 2006. The prevalence of blindness caused by trachoma was estimated by 10-year age group. In addition, the proportion of various causes of blindness was evaluated. The geographical distribution of blindness caused by trachoma both in 1987 and 2006 was analyzed in order to visualize the hot spots of blinding trachoma in China. RESULTS The prevalence of blindness caused by trachoma in China decreased from 51.5/100,000 in 1987 to 17.6/100,000 in 2006. In addition, the proportion of blindness attributed to trachoma also decreased from 10.1% (1987) to 0.9% (2006). Moreover, the prevalence of blindness caused by trachoma was over 200/100,000 in 2.2% of sampled counties in 2006 as compared to 8.6% in 1987. The hot spots of blinding trachoma were shown to be limited to underdeveloped mountain areas in Hubei and Guizhou provinces. CONCLUSION Although blinding trachoma is no longer the leading cause of blindness in China since the 2000's, the prevalence of trachoma should still be monitored in some underdeveloped mountain areas. Therefore, health organization must continue to fight against blinding trachoma in underdeveloped areas.
Collapse
Affiliation(s)
- T Liu
- Department of epidemiology and biostatistics, school of public health, Capital medical university, No.10, Xitoutiao, 100069 You An Men, Beijing, China
| | - Q Liang
- Beijing institute of ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Key laboratory of ophthalmology and visual sciences, 100005 Beijing, China
| | - A Hu
- Beijing institute of ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Key laboratory of ophthalmology and visual sciences, 100005 Beijing, China
| | - G Feng
- Center of clinical epidemiology & evidence-based medicine, Beijing children's hospital, capital medical university, Beijing, China
| | - N Wang
- Beijing institute of ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Key laboratory of ophthalmology and visual sciences, 100005 Beijing, China
| | - X Peng
- Department of epidemiology and biostatistics, school of public health, Capital medical university, No.10, Xitoutiao, 100069 You An Men, Beijing, China; Center of clinical epidemiology & evidence-based medicine, Beijing children's hospital, capital medical university, Beijing, China.
| | - C Baudouin
- Beijing institute of ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Key laboratory of ophthalmology and visual sciences, 100005 Beijing, China; Quinze-Vingts national ophthalmology hospital, 75012 Paris, France; Versailles Saint-Quentin-en-Yvelines university, 78000 Versailles, France; Inserm, U968, 75012 Paris, France; UPMC Université Paris 06, UMR_S 968, institut de la vision, 75012 Paris, France; CNRS, UMR_7210, 75012 Paris, France
| | - A Labbé
- Beijing institute of ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Key laboratory of ophthalmology and visual sciences, 100005 Beijing, China; Quinze-Vingts national ophthalmology hospital, 75012 Paris, France; Versailles Saint-Quentin-en-Yvelines university, 78000 Versailles, France; Inserm, U968, 75012 Paris, France; UPMC Université Paris 06, UMR_S 968, institut de la vision, 75012 Paris, France; CNRS, UMR_7210, 75012 Paris, France
| |
Collapse
|
41
|
|
42
|
Gong ZX, Maghrebi MF, Hu A, Foss-Feig M, Richerme P, Monroe C, Gorshkov AV. Kaleidoscope of quantum phases in a long-range interacting spin-1 chain. Phys Rev B 2016; 93:10.1103/PhysRevB.93.205115. [PMID: 31276074 PMCID: PMC6604636 DOI: 10.1103/physrevb.93.205115] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Motivated directly by recent trapped-ion quantum simulation experiments, we carry out a comprehensive study of the phase diagram of a spin-1 chain with XXZ-type interactions that decay as 1/rα , using a combination of finite and infinite-size DMRG calculations, spin-wave analysis, and field theory. In the absence of long-range interactions, varying the spin-coupling anisotropy leads to four distinct and well-studied phases: a ferromagnetic Ising phase, a disordered XY phase, a topological Haldane phase, and an antiferromagnetic Ising phase. If long-range interactions are antiferromagnetic and thus frustrated, we find primarily a quantitative change of the phase boundaries. On the other hand, ferromagnetic (nonfrustrated) long-range interactions qualitatively impact the entire phase diagram. Importantly, for α ≲ 3 long-range interactions destroy the Haldane phase, break the conformal symmetry of the XY phase, give rise to a new phase that spontaneously breaks a U(1) continuous symmetry, and introduce a possibly exotic tricritical point with no direct parallel in short-range interacting spin chains. Importantly, we show that the main signatures of all five phases found could be observed experimentally in the near future.
Collapse
Affiliation(s)
- Z.-X. Gong
- Joint Quantum Institute, NIST/University of Maryland,
College Park, Maryland 20742, USA
- Joint Center for Quantum Information and Computer Science,
NIST/University of Maryland, College Park, Maryland 20742, USA
| | - M. F. Maghrebi
- Joint Quantum Institute, NIST/University of Maryland,
College Park, Maryland 20742, USA
- Joint Center for Quantum Information and Computer Science,
NIST/University of Maryland, College Park, Maryland 20742, USA
| | - A. Hu
- Joint Quantum Institute, NIST/University of Maryland,
College Park, Maryland 20742, USA
- Department of Physics, American University, Washington, DC
20016, USA
| | - M. Foss-Feig
- Joint Quantum Institute, NIST/University of Maryland,
College Park, Maryland 20742, USA
- Joint Center for Quantum Information and Computer Science,
NIST/University of Maryland, College Park, Maryland 20742, USA
| | - P. Richerme
- Joint Quantum Institute, NIST/University of Maryland,
College Park, Maryland 20742, USA
- Department of Physics, Indiana University, Bloomington,
Indiana, 47405, USA
| | - C. Monroe
- Joint Quantum Institute, NIST/University of Maryland,
College Park, Maryland 20742, USA
- Joint Center for Quantum Information and Computer Science,
NIST/University of Maryland, College Park, Maryland 20742, USA
| | - A. V. Gorshkov
- Joint Quantum Institute, NIST/University of Maryland,
College Park, Maryland 20742, USA
- Joint Center for Quantum Information and Computer Science,
NIST/University of Maryland, College Park, Maryland 20742, USA
| |
Collapse
|
43
|
Gong ZX, Maghrebi MF, Hu A, Wall ML, Foss-Feig M, Gorshkov AV. Topological phases with long-range interactions. Phys Rev B 2016; 93:10.1103/PhysRevB.93.041102. [PMID: 31276075 PMCID: PMC6604642 DOI: 10.1103/physrevb.93.041102] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Topological phases of matter are primarily studied in systems with short-range interactions. In nature, however, nonrelativistic quantum systems often exhibit long-range interactions. Under what conditions topological phases survive such interactions, and how they are modified when they do, is largely unknown. By studying the symmetry-protected topological phase of an antiferromagnetic spin-1 chain with 1/r α interactions, we show that two very different outcomes are possible, depending on whether or not the interactions are frustrated. While unfrustrated long-range interactions can destroy the topological phase for α ≲ 3, the topological phase survives frustrated interactions for all α > 0. Our conclusions are based on strikingly consistent results from large-scale matrix-product-state simulations and effective-field-theory calculations, and we expect them to hold for more general interacting spin systems. The models we study can be naturally realized in trapped-ion quantum simulators, opening the prospect for experimental investigation of the issues confronted here.
Collapse
Affiliation(s)
- Z.-X. Gong
- Joint Quantum Institute, NIST/University of Maryland, College Park, Maryland 20742, USA
- Joint Center for Quantum Information and Computer Science, NIST/University of Maryland, College Park, Maryland 20742, USA
| | - M. F. Maghrebi
- Joint Quantum Institute, NIST/University of Maryland, College Park, Maryland 20742, USA
- Joint Center for Quantum Information and Computer Science, NIST/University of Maryland, College Park, Maryland 20742, USA
| | - A. Hu
- Joint Quantum Institute, NIST/University of Maryland, College Park, Maryland 20742, USA
- Department of Physics, American University, Washington, DC 20016, USA
| | - M. L. Wall
- JILA, NIST/University of Colorado, Boulder, Colorado 80309, USA
| | - M. Foss-Feig
- Joint Quantum Institute, NIST/University of Maryland, College Park, Maryland 20742, USA
- Joint Center for Quantum Information and Computer Science, NIST/University of Maryland, College Park, Maryland 20742, USA
| | - A. V. Gorshkov
- Joint Quantum Institute, NIST/University of Maryland, College Park, Maryland 20742, USA
- Joint Center for Quantum Information and Computer Science, NIST/University of Maryland, College Park, Maryland 20742, USA
| |
Collapse
|
44
|
Zhang P, Guo Z, Zhong K, Li Q, Ouyang J, Chen M, Hu A, Jiao X, Zhu X, He X. Evaluation of Immune Profiles and MicroRNA Expression Profiles in Peripheral Blood Mononuclear Cells of Long-Term Stable Liver Transplant Recipients and Recipients With Acute Rejection Episodes. Transplant Proc 2015; 47:2907-15. [PMID: 26707312 DOI: 10.1016/j.transproceed.2015.10.048] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Accepted: 10/20/2015] [Indexed: 12/16/2022]
Abstract
OBJECTIVE This study aimed to document the difference of immunophenotypes in peripheral blood mononuclear cells (PBMCs) between long-term stable liver transplant recipients and recipients with acute rejection. We also sought to identify whether there is any correlation between microRNA (miRNA) expression profile and the differential immunoprofile in these 2 groups to establish a specific miRNA biomarker to identify potential liver transplant recipients. METHODS PBMCs were isolated from 53 stable liver transplant recipients (STA group) and 15 liver transplant recipients with repeated biopsy-proven rejection episodes admitted to our hospital. Immunoprofiles were analyzed by means of flow cytometry. Analysis of miRNA expression in the PBMCs was performed by means of real-time polymerase chain reaction. RESULTS The immune profiling analysis showed increased frequency of peripheral natural killer cells and regulatory T cells in stable liver transplant recipients compared with the acute rejection recipients and healthy volunteers (P < .05). There was no significant difference in the immune cell levels (CD19(+) B cells, CD4(+) T cells, and CD8(+) T cells) in PBMCs among the transplant recipient groups and healthy control subjects. Three miRNAs, miR-18b, miR-340, and miR-106b, were up-regulated in the PBMCs of the STA recipients compared with recipients with acute rejection. CONCLUSIONS These results suggest that miR-18b, miR-340, and miR-106b, which regulate the expression of specific immunophenotypes, can be used as potential biomarkers to identify long-term stable liver transplant recipients from recipients with acute rejection.
Collapse
Affiliation(s)
- P Zhang
- Organ Transplant Center, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China
| | - Z Guo
- Organ Transplant Center, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China
| | - K Zhong
- Organ Transplant Center, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China
| | - Q Li
- Organ Transplant Center, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China
| | - J Ouyang
- Department of Surgical Oncology, Sun Yat-sen University, Dongguan, Guangdong, People's Republic of China
| | - M Chen
- Organ Transplant Center, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China
| | - A Hu
- Organ Transplant Center, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China
| | - X Jiao
- Organ Transplant Center, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China
| | - X Zhu
- Organ Transplant Center, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China.
| | - X He
- Organ Transplant Center, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China.
| |
Collapse
|
45
|
Fucaloro AF, Burgess R, Chary P, Hu A, Kan E, Lakliang Y, Stewart R, Yoshino A. A Volumetric Study of Aqueous Primary Alcohols as Functions of Concentration and Temperature. J SOLUTION CHEM 2015. [DOI: 10.1007/s10953-015-0400-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
46
|
Yuan M, Yang Y, Yu S, Hu A, Lu L, Ma J, Ding X, Li J. Posterior Pole Retinal Abnormalities in Mild Asymptomatic FEVR. Invest Ophthalmol Vis Sci 2014; 56:458-63. [DOI: 10.1167/iovs.14-15821] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
47
|
Qi S, Hu A. WE-G-141-02: Impact of Imaging Quality On Interfraction Patient Setup Errors and Autocorrelation in Image Guided Head-And-Neck Radiotherapy. Med Phys 2013. [DOI: 10.1118/1.4815653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
|
48
|
|
49
|
Lian J, Song H, Liu R, Qi S, Hu A. SU-E-T-592: Comparison of Low Dose Volume and Integral Dose in Rotational Arc Radiation Therapy Modalities. Med Phys 2012; 39:3842. [DOI: 10.1118/1.4735681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
|
50
|
Qi S, Liu R, Lian J, Hu A, Song H. SU-E-T-574: Volumetric Modulated Arc Therapy for Prostate Radiation: A Dosimetric Comparison between VMAT Techniques and Fixed-Beam IMRT. Med Phys 2012; 39:3837-3838. [DOI: 10.1118/1.4735663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
|