1
|
Sui L, Dahmann C. A cellular tilting mechanism important for dynamic tissue shape changes and cell differentiation in Drosophila. Dev Cell 2024:S1534-5807(24)00236-3. [PMID: 38692272 DOI: 10.1016/j.devcel.2024.04.011] [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: 12/20/2022] [Revised: 12/15/2023] [Accepted: 04/11/2024] [Indexed: 05/03/2024]
Abstract
Dynamic changes in three-dimensional cell shape are important for tissue form and function. In the developing Drosophila eye, photoreceptor differentiation requires the progression across the tissue of an epithelial fold known as the morphogenetic furrow. Morphogenetic furrow progression involves apical cell constriction and movement of apical cell edges. Here, we show that cells progressing through the morphogenetic furrow move their basal edges in opposite direction to their apical edges, resulting in a cellular tilting movement. We further demonstrate that cells generate, at their basal side, oriented, force-generating protrusions. Knockdown of the protein kinase Src42A or photoactivation of a dominant-negative form of the small GTPase Rac1 reduces protrusion formation. Impaired protrusion formation stalls basal cell movement and slows down morphogenetic furrow progression and photoreceptor differentiation. This work identifies a cellular tilting mechanism important for the generation of dynamic tissue shape changes and cell differentiation.
Collapse
Affiliation(s)
- Liyuan Sui
- School of Science, Technische Universität Dresden, 01062 Dresden, Germany
| | - Christian Dahmann
- School of Science, Technische Universität Dresden, 01062 Dresden, Germany; Cluster of Excellence Physics of Life, Technische Universität Dresden, 01062 Dresden, Germany.
| |
Collapse
|
2
|
Chen LM, Cong Q, Wu D, Chen Y, Qiu LH, Hong ZB, Yang YB, Xu L, Wang LF, Huang LX, Li WR, Tang JP, Cao YG, Sui L. A prospective multicentre controlled study of Gaoweikang (Chinese multiherb extract-based tincture) used in high-risk HPV infections. Eur Rev Med Pharmacol Sci 2023; 27:8985-8992. [PMID: 37843310 DOI: 10.26355/eurrev_202310_33922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 10/17/2023]
Abstract
OBJECTIVE The aim of the study was to investigate the safety and antiviral efficacy of a Chinese multiherb extract-based tincture (GWK) on a population of patients with high-risk human papilloma (hrHPV) infections and hrHPV-caused cervical low-grade squamous intraepithelial lesions (LSILs). PATIENTS AND METHODS Patients with persistent hrHPV infection were enrolled in Group A, including A1 subjects, who received the intervention, and A2 subjects, who received the control. Patients with hrHPV infection causing cervical LSIL were enrolled in Group B, which included B1 subjects, who received the intervention, and B2 subjects, who served as the control. For Groups A1 and B1, hrHPV was tested at 3 months (M3) and 6 months (M6) after the intervention. The side effects were also analyzed. RESULTS At baseline (D0), a total of 99 patients were enrolled in Group A, with 50 subjects in Group A1 and 49 subjects in Group A2. A total of 91 patients were enrolled in Group B, with 45 subjects in Group B1 and 46 subjects in Group B2. There was no significant difference in the characteristics, including average age, age stratification, and HPV genotype. At M6, both Group A1 and Group B1 had a higher hrHPV clearance rate than the control group (A1/A2: 80.0% vs. 20.4%; B1/B2: 64.4% vs. 15.2%, p<0.001). At M6, the effective rates of Group A1 and Group B1 were 84% (42/50) and 68.9% (31/45), respectively. The side effect rates of Groups A1 and B1 were 11.5% (6/52) and 11.1% (5/45), respectively. Most adverse reactions involved local discomfort, including vulvar erythema, vulvar itch, increased vaginal discharge, cervical bleeding, and mild pain in the lower abdomen. Univariate logistic regression analysis showed that the intervention had an OR of 12 (95% CI 4.431-32.50) for clearing persistent HPV infection (p<0.001). For cervical LSIL, the intervention had an OR of 10.1 for clearing persistent HPV infection (95% CI 3.68-27.7) (p<0.001). CONCLUSIONS The results of this study suggest that the Chinese multiherb extract-based tincture GWK is safe and well tolerated. Furthermore, this preliminary study showed that this Chinese multiherb extract-based tincture is helpful for promoting HPV clearance in cases of persistent HPV and HPV-induced LSIL.
Collapse
Affiliation(s)
- L-M Chen
- Medical Center of Diagnosis and Treatment for Cervical Diseases, Obstetrics and Gynaecology Hospital, Fudan University, Shanghai, China.
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
3
|
Zhang L, Xiao YP, Tao X, Cao YK, Sui L, Cong Q. [Detection rate and clinical characteristics of vulvar squamous intraepithelial lesion]. Zhonghua Fu Chan Ke Za Zhi 2023; 58:603-610. [PMID: 37599258 DOI: 10.3760/cma.j.cn112141-20230607-00255] [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: 08/22/2023]
Abstract
Objective: To explore the detection rate, clinical characteristics of vulvar squamous intraepithelial lesion (SIL). Methods: Women diagnosed with vulvar high-grade squamous intraepithelial lesions (HSIL) through colposcopy-guided biopsy from January 1, 2018 to August 31, 2022 in Obstetrics and Gynecology Hospital of Fudan University were included in a 1∶1 ratio with patients diagnosed with vulvar low-grade squamous intraepithelial lesions (LSIL) during the same period. Clinical characteristics including human papillomavirus (HPV) infection rate, genotype, cytology result, colposcopy impression, and lesion location were retrospectively analyzed. Results: (1) The proportion of vulvar SIL detected by colposcopy-guided biopsy increased annually from 2018 to 2022, with rates of 1.64% (740/45 057), 2.34% (1 110/47 402), 2.68% (1 108/41 335), 3.26% (1 536/47 078), 3.31% (667/20 155), with an average rate of 2.57% (5 161/201 027). (2) A total of 1 096 cases of vulvar HSIL and 1 096 cases of vulvar LSIL were included. The overall infection rate of HPV was 92.7% (1 993/2 150), with higher infection rate in vulvar HSIL patients than that in vulvar LSIL patients [96.0% (1 012/1 054) vs 89.5% (981/1 096); χ2=33.62, P<0.001]. Among vulvar HSIL patients, the common HPV genotype from high to low were HPV 16 (66.7%), HPV 52 (14.3%), and HPV 58 (10.0%). For vulvar LSIL patients, the most common HPV genotype were respectively HPV 16 (24.9%), HPV 6 (20.1%) and HPV 52 (17.1%). The overall sensitivity rate of cytology was 53.6%, with no significance difference between vulvar LSIL and HSIL groups (54.3% vs 52.9%; χ2=0.40, P=0.526). The accuracy of colposcopy impression for vulvar HSIL was lower than that for vulvar LSIL [40.2% (163/405) vs 81.7% (380/465); χ2=158.72, P<0.001]. About 57.3% (1 257/2 192) of the patients had concomitant cervical and vaginal lesions, with a higher rate in vulvar HSIL group than that in vulvar LSIL group [62.6% (686/1 096) vs 52.1% (571/1 096); χ2=24.67, P<0.001]. Unifocal lesion was the main type, with no significance difference between vulvar LSIL and HSIL groups [81.4% (381/468) vs 82.5% (386/468); χ2=0.18, P=0.671]. The most common lesion locations were the posterior commissure, followed by labia minora, vaginal vestibule, labia majora, perianal and clitoris. Conclusions: The detection rate of vulvar SIL under colposcopy is about 3%, and the infection rate of HPV is 92.7%. Vulvar SIL, especially vulvar HSIL, is likely to cause concomitant cervical and vaginal lesions. The accuracy of colposcopy in diagnosing vulvar HSIL is low. Therefore a comprehensive and careful examination of the vulva is necessary and suspicious vulvar lesions should be undergone colposcopy-guided biopsy for diagnosis.
Collapse
Affiliation(s)
- L Zhang
- Cervical Disease Center, Obstetrics and Gynecology Hospital of Fudan University, Shanghai 200011, China
| | - Y P Xiao
- Department of Pathology, Obstetrics and Gynecology Hospital of Fudan University, Shanghai 200011, China
| | - X Tao
- Department of Pathology, Obstetrics and Gynecology Hospital of Fudan University, Shanghai 200011, China
| | - Y K Cao
- Cervical Disease Center, Obstetrics and Gynecology Hospital of Fudan University, Shanghai 200011, China
| | - L Sui
- Cervical Disease Center, Obstetrics and Gynecology Hospital of Fudan University, Shanghai 200011, China
| | - Q Cong
- Cervical Disease Center, Obstetrics and Gynecology Hospital of Fudan University, Shanghai 200011, China
| |
Collapse
|
4
|
Tong JL, Zhu GH, Sun DW, Lu D, Cheng YF, Chen H, Pei LJ, Yin X, Zhou WD, Zhang W, Ling D, Xie X, Tan X, Zhu YJ, Wu XM, Hu CY, Li H, Wang Y, Fan JY, Jia XM, Zhu TY, Chen LM, Guo HY, Zhao SJ, Wang S, Feng SW, He XY, Chi YG, Sun XL, Lang JH, Sui L, Zhu L. [Consensus of Chinese experts on hysteroscopy day surgery center set-up and management process]. Zhonghua Fu Chan Ke Za Zhi 2022; 57:891-899. [PMID: 36562222 DOI: 10.3760/cma.j.cn112141-20220925-00594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
5
|
Chen LM, Zhang HW, Xie Y, Wang Q, Sui L. [Clinical study of hysteroscopical electroresection of FIGO type 3 myoma]. Zhonghua Fu Chan Ke Za Zhi 2022; 57:746-752. [PMID: 36299177 DOI: 10.3760/cma.j.cn112141-20220517-00329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Objective: To analyze the clinical application and to evaluate the efficiency of hysteroscopical electroresection of International Federation of Gynecology and Obstetrics (FIGO) type 3 myoma. Methods: The clinical data of patients who underwent hysteroscopical electroresection single FIGO type 3 myoma in Obstetrics and Gynecology Hospital of Fudan University from January 2019 to October 2021 were collected retrospectively. The clinical symptoms, myoma size, location, operation time, intraoperative bleeding, surgical complications and postoperative follow-up were recorded, and the subsequent pregnancy outcomes were followed-up. Results: Totally 35 patients with FIGO type 3 myoma were included in this study. The average age was (36.6±4.7) years old, the diameter of myoma was (4.0±1.2) cm (range: 2.0-5.8 cm). The rate of complete resection of myoma in one operation was 86% (30/35), the average operation time was (41±15) minutes (range: 20-65 minutes), and the average intraoperative bleeding was (24±18) ml (range: 5-150 ml). No complications such as uterine perforation, massive hemorrhage, hyperhyderation syndrome and infection occurred in all patients perioperation. There were 20 cases with significant increase of menstruation before operation, the cure rate and effective rate of hysteroscopical electroresection of FIGO type 3 myoma were 75% (15/20) and 95% (19/20). There were 24 patients with fertility requirements, their average follow-up time was (14.5±6.8) months, the pregnancy rate within 1 year after operation was 79% (19/24), and the average postoperative pregnancy time was (5.8±3.4) months. There were 15 cases who had completed delivery after operation, including 10 cases of vaginal delivery and 5 cases of cesarean section, and none of them had uterine rupture. Conclusions: Hysteroscopy could effectively resect FIGO type 3 myoma. Hysteroscopical electroresection of FIGO type 3 myoma is minimally invasive with rapid postoperative recovery and could achieve pregnancy in a short time, which is not only helpful to reduce the amount of menstruation, but also beneficial for the prognosis of fertility. It should be carried out by the experienced hysteroscopists.
Collapse
Affiliation(s)
- L M Chen
- Hysteroscopy Centre, Obstetrics and Gynecology Hospital of Fudan University, Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Shanghai 200011, China
| | - H W Zhang
- Hysteroscopy Centre, Obstetrics and Gynecology Hospital of Fudan University, Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Shanghai 200011, China
| | - Y Xie
- Hysteroscopy Centre, Obstetrics and Gynecology Hospital of Fudan University, Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Shanghai 200011, China
| | - Q Wang
- Hysteroscopy Centre, Obstetrics and Gynecology Hospital of Fudan University, Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Shanghai 200011, China
| | - L Sui
- Hysteroscopy Centre, Obstetrics and Gynecology Hospital of Fudan University, Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Shanghai 200011, China
| |
Collapse
|
6
|
Xiao JJ, Chen ZR, Wang Q, Sui L, Cong Q. [Stratified research on related risk factors of CINⅡ + in CINⅠ patients diagnosed by endocervical curettage under colposcopy]. Zhonghua Fu Chan Ke Za Zhi 2022; 57:608-617. [PMID: 36008288 DOI: 10.3760/cma.j.cn112141-20220520-00338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To estimate risks of cervical intraepithelial neoplasia (CIN) Ⅱ or worse (CINⅡ+) on loop electrosurgical excisional procedure (LEEP) specimens with the diagnosis of endocervical curettage (ECC) CINⅠ compared with biopsy CINⅠ, and also to investigate the hierarchical management scheme of ECC CINⅠ based on the relevant factors of CINⅡ+ risk. Methods: (1) A retrospective computer-based research for subjects enrolled in the Obstetrics and Gynecology Hospital, Fudan University from Jan. 2013 to Jun. 2021 was performed. The case group comprised women with an ECC CINⅠ (ECC results of CINⅠ with colposcopy-directed biopsy results ≤CINⅠ), and the control group comprised women with a biopsy CINⅠ (colposcopy-directed biopsy results of CINⅠ with negative ECC findings) were divided after LEEP surgery and diagnosis in the next three months. The clinical data of all patients before LEEP were analyzed, and the pathological diagnosis between two groups after LEEP was compared. (2) Variables, including age, cytology, high-risk human papillomavirus (HR-HPV), ECC results, cervical transformation zone (TZ) and colposcopy impression, were included to describe the characteristics and compare the incidence of LEEP CINⅡ+. (3) Univariate analysis and Multivariate logistic regression method were used to analyze the related factors that affect the LEEP CINⅡ+ in CINⅠ patients. Further, the specific risks caused by related factors and conduct a stratified study in LEEP CINⅡ+ were analyzed. Results: (1) Overall, 2 581 women with ECC CINⅠ or biopsy CINⅠ diagnosis who underwent LEEP participated in the study with the mean age (43.6±9.5) years old. Chi square test found that the age and cytology of patients in ECC CINⅠ group were statistically different from those of biopsy CINⅠ group (all P<0.05). There was no significant difference in HR-HPV detection, TZ type and colposcopy impression between the two groups (all P>0.05). ECC CINⅠ comprised 957 women, with LEEP histopathology results revealing 288 (30.1%, 288/957) CINⅡ+, which was significantly higher than that of biopsy CINⅠ which was comprised 1 624 women, with LEEP histopathology results showing 333 (20.5%, 333/1 624) CINⅡ+ (χ2=30.31, P<0.001). (2) Compared by LEEP CINⅡ+ with LEEP ≤CINⅠ group, there were no significant difference in the age, HR-HPV, colposcopy impression (all P>0.05); but there were significantly differences in cytology, ECC CINⅠ, type Ⅲ TZ (all P<0.001). Multivariate logistic regression analysis showed that atypical squamous epithelial cells (ASC-H; OR=2.77, 95%CI: 2.04-3.77), high-grade squamous intraepithelial lesions and worse (HSIL+; OR=2.93, 95%CI: 2.24-3.81), ECC CINⅠ (OR=1.89, 95%CI: 1.56-2.29) and type Ⅲ of TZ (OR=1.76, 95%CI: 1.45-2.11) were independent risk factors for LEEP CINⅡ+ (all P<0.05). (3) When cytology was ≤low-grade squamous intraepithelial lesion (LSIL) and ≥ASC-H, the detection rate of CINⅡ+ in ECC CINⅠ was significantly higher than that of biopsy CINⅠ (all P<0.001). In ECC CINⅠ, the rate of CINⅡ+ with cytology ≤LSIL was significantly lower than that in cytology ≥ASC-H (56.0% vs 25.9%; χ2=49.38, P<0.001). In type Ⅰ/Ⅱ of TZ, the detection rate of CINⅡ+ between ECC CINⅠand biopsy CINⅠ had no significantly different; while in type Ⅲ of TZ, there was significantly different (72.7% vs 46.2%; χ2=4.02, P=0.045). In ECC CINⅠ, type Ⅲof TZ was significantly higher in the rate of CINⅡ+ than that of type Ⅰ/Ⅱ of TZ (72.7% vs 21.7%; χ2=16.38, P<0.001). When cytology ≥ASC-H, type Ⅲ of TZ and colposcopy impression of HSIL were combined, the rate of CINⅡ+ in ECC CINⅠ was 6/6 while 1/3 in biopsy CINⅠ. Conclusions: Cytology ≥ASC-H, ECC CINⅠ and type Ⅲ TZ are the risk factors of LEEP CINⅡ+. However, cytology ≥ASC-H is more valuable in predicting LEEP CINⅡ+ than ECC CINⅠ. For patients with ECC CINⅠ to perform LEEP, it is recommended that cytology ≥ASC-H is taken as the first level stratification, and type Ⅲ TZ is taken as the second level stratification. The colposcopy impression of patients is recommended for a reference parameter.
Collapse
Affiliation(s)
- J J Xiao
- Cervical Disease Center, Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200011, China
| | - Z R Chen
- Cervical Disease Center, Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200011, China
| | - Q Wang
- Cervical Disease Center, Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200011, China
| | - L Sui
- Cervical Disease Center, Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200011, China
| | - Q Cong
- Cervical Disease Center, Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200011, China
| |
Collapse
|
7
|
Zhang D, Song KJ, Ren YZ, Sui L, Yao Q. [Effect of exosome derived from ovarian cancer cell on the differentiation of fibroblast]. Zhonghua Zhong Liu Za Zhi 2022; 44:737-742. [PMID: 35880340 DOI: 10.3760/cma.j.cn112152-20200110-00021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To study the effects of exosome secreted by ovarian cancer (OC) cell on the differentiation and metastasis of normal fibroblasts (NFs). Methods: NFs were collected from patients who underwent hysteromyoma resection in the Affiliated Hospital of Qingdao University from May to December 2019. Exosome was extracted from the culture supernatant of SKOV3 cells by using ultra-high-speed centrifugation. The NFs were co-cultured with condition medium (CM), exosome of SKOV3 (SKOV3-exo) and control medium. The expression levels of fibroblast activation protein (FAP) and α-smooth muscle actin (α-SMA) were detected by real-time quantitative reverse transcription polymerase chain reaction (qRT-PCR) and western blot. The metastatic ability of NFs was detected by Transwell array. Results: Under the transmission electron microscope, the extracellular vesicles extracted from the culture supernatant of SKOV3 were 30-100 nm in diameter with cup holder-like bilayer membrane structure, and the protein expression levels of TSG101 and HSP27 in exosomes (1.00±0.05 and 1.12±0.13) were higher than those of ovarian cancer SKOV3 cells (0.22±0.21 and 0.36±0.14, respectively, P<0.05). PKH67 fluorescently labeled exosomes could be taken up by NFs. The expression levels of α-SMA and FAP mRNA in CM group(2.91±0.15 and 3.21±0.33)and SKOV3-exo group (3.50±0.21 and 4.63±0.24, respectively) were higher than that in blank group (1.00±0.06 and 1.00±0.13, P<0.05). The protein expression levels of α-SMA and FAP in CM group and SKOV3-exo group (0.89±0.11 and 1.25±0.09, 0.81±0.09 and 1.20±0.12) were higher than those in the blank group (0.12±0.31 and 0.11±0.19, respectively, P<0.05). The migrated numbers of cells in the CM group and SKOV3-exo group [(215.01±14.80) and (389.72±19.43), respectively] were higher than that in the blank group [(113.73±4.70), P<0.05]. Conclusion: The exosome secreted by SKOV3 cells can be taken up by NFs, which makes it to differentiate into cancer associated fibroblasts (CAFs) and significantly enhances its metastatic ability, indicating that OC cells may promote the transformation of normal ovarian mesenchymal fibroblasts to CAFs through exosome pathways, and then promote the development of ovarian cancer.
Collapse
Affiliation(s)
- D Zhang
- Department of Gynecology, the Affiliated Hospital of Qingdao University, Qingdao 266555, China
| | - K J Song
- Department of Gynecology, the Affiliated Hospital of Qingdao University, Qingdao 266555, China
| | - Y Z Ren
- Department of Emergency Trauma Surgery, Luoyang Central Hospital Affiliated to Zhengzhou University, Luoyang 471000, China
| | - L Sui
- Department of Gynecology, the Affiliated Hospital of Qingdao University, Qingdao 266555, China
| | - Q Yao
- Department of Gynecology, the Affiliated Hospital of Qingdao University, Qingdao 266555, China
| |
Collapse
|
8
|
Sui L, Zeng J, Ye L, Martin T, Jiang W, Hargest R. P-282 Impact of death-associated protein-3 (DAP3) and DAP3 binding cell death enhancer 1 (DELE1) on drug sensitivity in colorectal cancer cells. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.04.371] [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: 11/16/2022] Open
|
9
|
Huang SS, Sui L, Chen LM, Zhang HW, Tao X. [Risk stratified management of cervical adenocarcinoma in situ based on cone margin state]. Zhonghua Fu Chan Ke Za Zhi 2021; 56:622-629. [PMID: 34547863 DOI: 10.3760/cma.j.cn112141-20210802-00417] [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 investigate the hierarchical management scheme of cervical adenocarcinoma in situ (AIS) based on cervical conization margin state. Methods: All medical records of 249 patients diagnosed as AIS by loop electrosurgical excision procedure (LEEP) conization from Jan. 2010 to Dec. 2015 in Obstetrics and Gynecology Hospital of Fudan University were retrospectively reviewed, to explore the relationship between the status of the resection margin and the residual lesion after LEEP, and the multivariate logistic regression method was used to analyze the related factors that affect the residual lesion after LEEP in cervical AIS patients. Results: (1) The age of 249 cervical AIS patients was (40±8) years old (range: 23-71 years old). Of the 249 patients, 19 (7.6%, 19/249) had residual lesions; 69 cases were pathologically diagnosed as AIS after LEEP, and the residual lesion rate was 13.0% (9/69), which was significantly higher than that of AIS + high-grade squamous intraepithelial lesion [5.6% (10/180); χ2=3.968,P=0.046]; 33 cases were multifocal lesions, the residual rate of lesions was 21.2% (7/33), which was significantly higher than that of single focal lesions patients [5.6% (12/216); χ2=7.858, P=0.005]; 181 patients underwent endocervical curettage (ECC) before surgery, the residual rate of lesions in ECC-positive patients was 14.0% (14/100) , significantly higher than that of ECC-negative patients [4.9% (4/81); χ2=4.103, P=0.043]. (2) Among 249 cases of AIS patients, the positive rate of resection margins after LEEP was 35.3% (88/249); the residual rate of lesions in patients with positive resection margins (14.8%, 13/88) was significantly higher than those with negative margins [3.8%(6/156); χ2=9.355, P=0.002]. The age of patients underwent total hysterectomy after LEEP was (43±7) years old, which was significantly higher than that of patients who did not undergo total hysterectomy [(37±8) years old; t=6.518, P<0.01].Among the patients underwent total hysterectomy after LEEP, 3 cases (2.0%, 3/152) had fertility requirements, while 38 cases (39.2%, 38/97) did not underwent total hysterectomy, the difference between the two groups was statistically significant (χ2=59.579, P<0.01). Among the 152 patients who underwent total hysterectomy after LEEP, the residual rate of lesions was 11.8% (18/152); the residual rate of lesions in patients with positive resection margins was significantly higher than that of patients with negative resection margins [18.8% (12/64) vs 7.0% (6/86); χ2=4.861, P=0.028]. The median follow-up time of 97 patients who did not undergo total hysterectomy after LEEP was 32 months (range: 4-70 months). During the follow-up period, 3 cases of cervical AIS recurrence (3.1%, 3/97) and were followed by hysterectomy,no invasive adenocarcinoma were seen. (3) Multivariate logistic regression analysis showed that the positive resection margin (OR=4.098, 95%CI: 1.235-13.595, P=0.021), multifocal lesions (OR=5.464, 95%CI: 1.494-19.981, P=0.010) were independent risk factors that affected the residual lesions in patients with cervical AIS after LEEP. Conclusions: The cervical AIS patients after LEEP conization suggested be stratified by cone margin state as the first-line stratified index, age and fertility needs as the second-line stratified management index. The individualized management plan should be developed based on comprehensive assessment of high-risk factors of residual lesions.
Collapse
Affiliation(s)
- S S Huang
- Cervical Disease Center, Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200011, China
| | - L Sui
- Cervical Disease Center, Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200011, China
| | - L M Chen
- Cervical Disease Center, Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200011, China
| | - H W Zhang
- Cervical Disease Center, Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200011, China
| | - X Tao
- Department of Pathology, Obstetrics and Gynecology Hospital, Fudan University, ShangHai 200011, China
| |
Collapse
|
10
|
Almazyad AM, Gao Y, Shahrabi-Farahani S, Gartung A, Sui L, Das R, Costea DE, Watnick RS, Panigrahy D, Adam RM, Bielenberg DR. NOVEL NEUROPILIN 2-TARGETING BIOLOGIC FOR THE TREATMENT OF ORAL SQUAMOUS CELL CARCINOMA. Oral Surg Oral Med Oral Pathol Oral Radiol 2021. [DOI: 10.1016/j.oooo.2021.03.035] [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: 11/29/2022]
|
11
|
Sui L, Dahmann C. Increased lateral tension is sufficient for epithelial folding in Drosophila. Development 2020; 147:147/23/dev194316. [DOI: 10.1242/dev.194316] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 10/16/2020] [Indexed: 11/20/2022]
Abstract
ABSTRACT
The folding of epithelial sheets is important for tissues, organs and embryos to attain their proper shapes. Epithelial folding requires subcellular modulations of mechanical forces in cells. Fold formation has mainly been attributed to mechanical force generation at apical cell sides, but several studies indicate a role of mechanical tension at lateral cell sides in this process. However, whether lateral tension increase is sufficient to drive epithelial folding remains unclear. Here, we have used optogenetics to locally increase mechanical force generation at apical, lateral or basal sides of epithelial Drosophila wing disc cells, an important model for studying morphogenesis. We show that optogenetic recruitment of RhoGEF2 to apical, lateral or basal cell sides leads to local accumulation of F-actin and increase in mechanical tension. Increased lateral tension, but not increased apical or basal tension, results in sizeable fold formation. Our results stress the diversification of folding mechanisms between different tissues and highlight the importance of lateral tension increase for epithelial folding.
Collapse
Affiliation(s)
- Liyuan Sui
- Institute of Genetics, Technische Universität Dresden, 01062 Dresden, Germany
| | - Christian Dahmann
- Institute of Genetics, Technische Universität Dresden, 01062 Dresden, Germany
- Cluster of Excellence Physics of Life, Technische Universität Dresden, 01062 Dresden, Germany
| |
Collapse
|
12
|
Sui L, Dahmann C. Wingless counteracts epithelial folding by increasing mechanical tension at basal cell edges in Drosophila. Development 2020; 147:147/5/dev184713. [DOI: 10.1242/dev.184713] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 01/28/2020] [Indexed: 01/21/2023]
Abstract
ABSTRACT
The modulation of mechanical tension is important for sculpturing tissues during animal development, yet how mechanical tension is controlled remains poorly understood. In Drosophila wing discs, the local reduction of mechanical tension at basal cell edges results in basal relaxation and the formation of an epithelial fold. Here, we show that Wingless, which is expressed next to this fold, promotes basal cell edge tension to suppress the formation of this fold. Ectopic expression of Wingless blocks fold formation, whereas the depletion of Wingless increases fold depth. Moreover, local depletion of Wingless in a region where Wingless signal transduction is normally high results in ectopic fold formation. The depletion of Wingless also results in decreased basal cell edge tension and basal cell area relaxation. Conversely, the activation of Wingless signal transduction leads to increased basal cell edge tension and basal cell area constriction. Our results identify the Wingless signal transduction pathway as a crucial modulator of mechanical tension that is important for proper wing disc morphogenesis.
Collapse
Affiliation(s)
- Liyuan Sui
- Institute of Genetics, Technische Universität Dresden, 01062 Dresden, Germany
| | - Christian Dahmann
- Institute of Genetics, Technische Universität Dresden, 01062 Dresden, Germany
- Cluster of Excellence Physics of Life, Technische Universität Dresden, 01062 Dresden, Germany
| |
Collapse
|
13
|
Zhao Z, Liu X, Luan C, Liu X, Wang D, Qin T, Sui L, Zhang W. Architecting hierarchical shell porosity of hollow prussian blue-derived iron oxide for enhanced Li storage. J Microsc 2019; 276:53-62. [PMID: 31603242 DOI: 10.1111/jmi.12836] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 05/29/2019] [Revised: 09/12/2019] [Accepted: 10/01/2019] [Indexed: 11/28/2022]
Abstract
Delicate architecture of active material enables improving the performacne of lithium ion batteries. Environmental-friendly Fe2 O3 anode has high theoretical specific capacity (1007 mAh g-1 ) in lithium ion batteries, but suffers from structural collapsing and poor electronic conductivity. Herein, we design an unique hierarchical iron oxide by regulating the initial precursor prussian blue and targeting hollow-shell structures with full consideration of temperature controls. Among them, Fe2 O3 with a sheet-crossing structure at 650°C, affords obvious advantages of improved electronic conductivity, short ionic diffusion length, prevented particle agglomeration, and buffer volume change. Thus, we achieve a superior discharge specific capacity of 611 mAh g-1 at 500 mA g-1 . Regulating hierarchical structure of prussian blue-assisted oxides enables effectively enchancing Li storge performance. LAY DESCRIPTION: Nanoparticle self-assembly, one of bottom-up methods is often used to prepare hollow hierarchical structures, whereas it suffers from low productivity and insufficient stability. Hence, we designed a unique hierarchical iron oxide by top-down method with regulating the initial precursor PB and targeting hollow-shell structures through full consideration of temperature controls. Delicate architecture of active material enables improving the performacne of lithium ion batteries. Environmental-friendly Fe2 O3 anode has high theoretical specific capacity (1007 mAh g-1 ) in lithium ion batteries, but suffers from structural collapsing and poor electronic conductivity. Hence, we prepared Prussian Blue (PB) materials with different sizes and calcined them at different temperatures. We found that no matter what the size of PB, the sheet-crossing morphology appeared at 650°C, and the interlaced morphology was the key to improve the performance of lithium batteries. If the size of PB precursor is too large or too small, it has adverse effects on lithium batteries. Only when the size and calcination temperature of PB precursor reach the optimum state, the best performance can be obtained. The calcination PB-K-3 at 650°C has a unique hierarchical structure of sheet-crossing. An obvious advantages include the prevention of particle agglomeration, short ionic diffusion lengths, and buffering volume changes. As a consequence, 611 mAh g-1 was obtained at the current density of 500 mA g-1 . In addition, we observed the structural changes of electrode plates at different reaction potentials, according to the reaction equation of Fe2 O3 +xLi+ +xe→Lix Fe2 O3 . With the proceeding charge process, the voltage increases from 0.01 to 3 V, the lithium ions gradually comes out of the iron oxide electrode surface. Whereas the discharging process reverses the aforementioned phenomena. Even if the changing volumes, however, the shape of cubic blocks for the PB-K-3 is preserved at different potentials. Taking these advantages into account, our designed MOFs-derived struture was an effective way to prepare hollow hierarchical structure with enhanced Li storage performacne. Such work is expected to facilitate the design of new electrode structure of lithium batteries.
Collapse
Affiliation(s)
- Z Zhao
- Key Laboratory of Mobile Materials MOE, School of Materials Science & Engineering, Electron Microscopy Center, International Center of Future Science, Jilin University, Changchun, China
| | - X Liu
- Key Laboratory of Mobile Materials MOE, School of Materials Science & Engineering, Electron Microscopy Center, International Center of Future Science, Jilin University, Changchun, China.,College of Biological and Agricultural Engineering, Jilin University, Changchun, China
| | - C Luan
- Key Laboratory of Mobile Materials MOE, School of Materials Science & Engineering, Electron Microscopy Center, International Center of Future Science, Jilin University, Changchun, China
| | - X Liu
- Key Laboratory of Mobile Materials MOE, School of Materials Science & Engineering, Electron Microscopy Center, International Center of Future Science, Jilin University, Changchun, China
| | - D Wang
- State Key Laboratory of Chem/Bio-Sensing and Chemometrics, Provincial Hunan Key Laboratory for Graphene Materials and Devices, College of Chemistry and Chemical Engineering, Hunan University, Changsha, China
| | - T Qin
- Key Laboratory of Mobile Materials MOE, School of Materials Science & Engineering, Electron Microscopy Center, International Center of Future Science, Jilin University, Changchun, China
| | - L Sui
- Key Laboratory of Mobile Materials MOE, School of Materials Science & Engineering, Electron Microscopy Center, International Center of Future Science, Jilin University, Changchun, China
| | - W Zhang
- Key Laboratory of Mobile Materials MOE, School of Materials Science & Engineering, Electron Microscopy Center, International Center of Future Science, Jilin University, Changchun, China.,Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China
| |
Collapse
|
14
|
Sui L, Alt S, Weigert M, Dye N, Eaton S, Jug F, Myers EW, Jülicher F, Salbreux G, Dahmann C. Differential lateral and basal tension drive folding of Drosophila wing discs through two distinct mechanisms. Nat Commun 2018; 9:4620. [PMID: 30397306 PMCID: PMC6218478 DOI: 10.1038/s41467-018-06497-3] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Accepted: 09/05/2018] [Indexed: 12/26/2022] Open
Abstract
Epithelial folding transforms simple sheets of cells into complex three-dimensional tissues and organs during animal development. Epithelial folding has mainly been attributed to mechanical forces generated by an apically localized actomyosin network, however, contributions of forces generated at basal and lateral cell surfaces remain largely unknown. Here we show that a local decrease of basal tension and an increased lateral tension, but not apical constriction, drive the formation of two neighboring folds in developing Drosophila wing imaginal discs. Spatially defined reduction of extracellular matrix density results in local decrease of basal tension in the first fold; fluctuations in F-actin lead to increased lateral tension in the second fold. Simulations using a 3D vertex model show that the two distinct mechanisms can drive epithelial folding. Our combination of lateral and basal tension measurements with a mechanical tissue model reveals how simple modulations of surface and edge tension drive complex three-dimensional morphological changes.
Collapse
Affiliation(s)
- Liyuan Sui
- Institute of Genetics, Technische Universität Dresden, 01062, Dresden, Germany
| | - Silvanus Alt
- Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Strasse 38, 01187, Dresden, Germany
- The Francis Crick Institute, 1 Midland Road, NW1 1AT, London, UK
- Max-Delbrück-Center for Molecular Medicine, Robert-Rössle-Strasse 10, 13125, Berlin, Germany
| | - Martin Weigert
- Center for Systems Biology Dresden (CSBD), Pfotenhauerstrasse 108, 01307, Dresden, Germany
- Max Planck Institute of Molecular Cell Biology and Genetics, Pfotenhauerstrasse 108, 01307, Dresden, Germany
| | - Natalie Dye
- Max Planck Institute of Molecular Cell Biology and Genetics, Pfotenhauerstrasse 108, 01307, Dresden, Germany
| | - Suzanne Eaton
- Max Planck Institute of Molecular Cell Biology and Genetics, Pfotenhauerstrasse 108, 01307, Dresden, Germany
- Biotechnologisches Zentrum, Technische Universität Dresden, Tatzberg 47/49, 01309, Dresden, Germany
| | - Florian Jug
- Center for Systems Biology Dresden (CSBD), Pfotenhauerstrasse 108, 01307, Dresden, Germany
- Max Planck Institute of Molecular Cell Biology and Genetics, Pfotenhauerstrasse 108, 01307, Dresden, Germany
| | - Eugene W Myers
- Center for Systems Biology Dresden (CSBD), Pfotenhauerstrasse 108, 01307, Dresden, Germany
- Max Planck Institute of Molecular Cell Biology and Genetics, Pfotenhauerstrasse 108, 01307, Dresden, Germany
- Department of Computer Science, Technische Universität Dresden, 01062, Dresden, Germany
| | - Frank Jülicher
- Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Strasse 38, 01187, Dresden, Germany
- Center for Systems Biology Dresden (CSBD), Pfotenhauerstrasse 108, 01307, Dresden, Germany
| | - Guillaume Salbreux
- Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Strasse 38, 01187, Dresden, Germany.
- The Francis Crick Institute, 1 Midland Road, NW1 1AT, London, UK.
| | - Christian Dahmann
- Institute of Genetics, Technische Universität Dresden, 01062, Dresden, Germany.
| |
Collapse
|
15
|
Song Y, Wang Q, Sui L, Gao SJ. [Clinical significance of loop electrosurgical excisional procedure in diagnosis and treatment of cervical adenocarcinoma in situ and invasive cervical adenocarcinoma]. Zhonghua Fu Chan Ke Za Zhi 2018; 53:178-182. [PMID: 29609232 DOI: 10.3760/cma.j.issn.0529-567x.2018.03.007] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the accuracy of colposcopic biopsy on diagnosis of cervical adenocarcinoma in situ (AIS) and the clinical significance of loop electrosurgical excisional procedure (LEEP) on diagnosis and treatment of AIS and invasive adenocarcinoma. Methods: All medical records of 193 patients diagnosed as AIS by colposcopic biopsy and (or) AIS or invasive adenocarcinoma diagnosed by LEEP conization from Jan. 2015 to Dec. 2016 in Obstetrics and Gynecology Hospital of Fudan University were retrospectively reviewed. The final diagnosis was based on colposcopic biopsy or LEEP or the highest grade of pathological diagnosis after hysterectomy. Results: In the 193 patients, 155 cases were finally diagnosed as AIS and 38 cases as invasive adenocarcinoma by histopathologic examination. Among the 155 AIS patients, 21.9% (34/155) had positive cone margins, in which 26 patients had hysterectomy, 30.8% (8/26) had residual disease in hysterectomy specimens; 78.1% (121/155) had negative cone margins, 68 patients with negative margins had hysterectomy and 5.9% (4/68) had residual disease, which was significantly lower than that with positive margins (χ(2)=10.46, P=0.001) . One hundred and twenty from one hundred ninty-three (62.3%, 120/193) with AIS were detected by colposcopy. Pathological diagnosis of 50.8% (98/193) cases were upgraded after LEEP conization. Conclusions: Colposcopy is indispensable for the diagnosis of AIS, but accurate diagnosis should be made by LEEP. LEEP is capable of detecting AIS or cervical adenocarcinoma that was misdiagnosed by colposcopy, which is a pivotal method for accurate diagnosis. The margin status of LEEP is important for patients in choosing further hysterectomy, but the presence of cervical adenocarcinoma should always be aware of.
Collapse
Affiliation(s)
- Y Song
- Medical Center of Diagnosis and Treatment for Cervical Diseases, Obstetrics and Gynecology Hospital of Fudan University, Shanghai 200011, China
| | | | | | | |
Collapse
|
16
|
Wang G, Sui L, Gai P, Li G, Qi X, Jiang X. The efficacy and safety of vertebral fracture prevention therapies in post-menopausal osteoporosis treatment: Which therapies work best? a network meta-analysis. Bone Joint Res 2017; 6:452-463. [PMID: 28765269 PMCID: PMC5539309 DOI: 10.1302/2046-3758.67.bjr-2016-0292.r1] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 03/03/2017] [Indexed: 01/07/2023] Open
Abstract
Objectives Osteoporosis has become an increasing concern for older people as it may potentially lead to osteoporotic fractures. This study is designed to assess the efficacy and safety of ten therapies for post-menopausal women using network meta-analysis. Methods We conducted a systematic search in several databases, including PubMed and Embase. A random-effects model was employed and results were assessed by the odds ratio (OR) and corresponding 95% confidence intervals (CI). Furthermore, with respect to each outcome, each intervention was ranked according to the surface under the cumulative ranking curve (SUCRA) value. Results With respect to preventing new vertebral fractures (NVF), all ten drugs outperformed placebo, and etidronate proved to be the most effective treatment (OR 0.24, 95% CI 0.14 to 0.39). In addition, zoledronic acid and parathyroid hormone ranked higher compared with the other drugs. With respect to preventing clinical vertebral fractures (CVF), zoledronic acid proved to be the most effective drug (OR = 0.25, 95% CI 0.08 to 0.92), with denosumab as a desirable second option (OR = 0.48, 95% CI 0.22 to 0.96), when both were compared with placebo. As for adverse events (AE) and severe adverse events (SAE), no significant difference was observed. According to SUCRA, etidronate ranked first in preventing CVF; parathyroid hormone and zoledronic acid ranked highly in preventing NVF and CVF. Raloxifene was safe with a high rank in preventing AEs and SAEs though performed unsatisfactorily in efficacy. Conclusions This study suggests that, taking efficacy and safety into account, parathyroid hormone and zoledronic acid had the highest probability of satisfactory performance in preventing osteoporotic fractures. Cite this article: G. Wang, L. Sui, P. Gai, G. Li, X. Qi, X. Jiang. The efficacy and safety of vertebral fracture prevention therapies in post-menopausal osteoporosis treatment: Which therapies work best? a network meta-analysis. Bone Joint Res 2017;6:452–463. DOI: 10.1302/2046-3758.67.BJR-2016-0292.R1.
Collapse
Affiliation(s)
- G Wang
- Department of Joint Surgery, the Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai 264000, Shandong, China
| | - L Sui
- Department of Joint Surgery, the Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai 264000, Shandong, China
| | - P Gai
- Department of Joint Surgery, the Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai 264000, Shandong, China
| | - G Li
- Department of Joint Surgery, the Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai 264000, Shandong, China
| | - X Qi
- Department of Joint Surgery, the Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai 264000, Shandong, China
| | - X Jiang
- Department of Joint Surgery, the Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai 264000, Shandong, China
| |
Collapse
|
17
|
Abstract
The aim of this study was to investigate the tumor protein p73 (TP73) G4C14-A4T14 polymorphism and to perform a meta-analysis to assess TP73 expression in cervical cancer and precancerous tissue. Articles containing data regarding TP73 status in cervical cancer patients and healthy controls were retrieved from PubMed, EMBASE, Cochrane, Chinese Biomedical Literature, and China National Knowledge Infrastructure databases. Then, the quality of the studies was evaluated according to inclusion and exclusion criteria. Odds ratios between the case and control groups were used as an effect evaluation index and the RevMan 5.0 software was employed to carry out the meta-analysis. Three independent investigations including 8452 cases of cervical cancer and 8326 healthy controls were included in our study following the application of inclusion and exclusion criteria. PCR genotyping revealed that the TP73 GC/GC genotype produced a 193-bp product, while the AT/AT genotype produced a 270-bp fragment, and GC/AT genotype samples produced two fragments of 193 and 270 bp. Meta-analysis showed that TP73 expression in cervical cancer was significantly higher than that in normal cervical squamous epithelium (P < 0.05). This elevated expression may play an important role in the occurrence and development of cervical cancer. Therefore, TP73 testing might be useful in the screening and diagnosis of cervical cancer and precancerous lesions.
Collapse
Affiliation(s)
- H Feng
- Department of Obstetrics and Gynecology, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China
| | - L Sui
- Department of Obstetrics and Gynecology, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China
| | - M Du
- Department of Obstetrics and Gynecology, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China
| | - Q Wang
- Department of Obstetrics and Gynecology, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China
| |
Collapse
|
18
|
Wang L, Zhu L, Luan R, Wang L, Fu J, Wang X, Sui L. Analyzing gene expression profiles in dilated cardiomyopathy via bioinformatics methods. ACTA ACUST UNITED AC 2016; 49:e4897. [PMID: 27737314 PMCID: PMC5064772 DOI: 10.1590/1414-431x20164897] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 07/28/2016] [Indexed: 11/22/2022]
Abstract
Dilated cardiomyopathy (DCM) is characterized by ventricular dilatation, and it is a
common cause of heart failure and cardiac transplantation. This study aimed to
explore potential DCM-related genes and their underlying regulatory mechanism using
methods of bioinformatics. The gene expression profiles of GSE3586 were downloaded
from Gene Expression Omnibus database, including 15 normal samples and 13 DCM
samples. The differentially expressed genes (DEGs) were identified between normal and
DCM samples using Limma package in R language. Pathway enrichment analysis of DEGs
was then performed. Meanwhile, the potential transcription factors (TFs) and
microRNAs (miRNAs) of these DEGs were predicted based on their binding sequences. In
addition, DEGs were mapped to the cMap database to find the potential small molecule
drugs. A total of 4777 genes were identified as DEGs by comparing gene expression
profiles between DCM and control samples. DEGs were significantly enriched in 26
pathways, such as lymphocyte TarBase pathway and androgen receptor signaling pathway.
Furthermore, potential TFs (SP1, LEF1, and NFAT) were identified, as well as
potential miRNAs (miR-9, miR-200 family, and miR-30 family). Additionally, small
molecules like isoflupredone and trihexyphenidyl were found to be potential
therapeutic drugs for DCM. The identified DEGs (PRSS12 and FOXG1), potential TFs, as
well as potential miRNAs, might be involved in DCM.
Collapse
Affiliation(s)
- Liming Wang
- Emergency Department, The Second Affiliated Hospital of Xi'an, Jiaotong University, Xi'an, China
| | - L Zhu
- Department of Emergency Medicine, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - R Luan
- Medical Department, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - L Wang
- Department of Emergency Medicine, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - J Fu
- Emergency Department, The Second Affiliated Hospital of Xi'an, Jiaotong University, Xi'an, China
| | - X Wang
- Department of Emergency Medicine, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - L Sui
- Department of Emergency Medicine, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| |
Collapse
|
19
|
Sui L, Li YY. [Standardization of colposcopic terminology and its significance]. Zhonghua Fu Chan Ke Za Zhi 2016; 51:663-665. [PMID: 27671046 DOI: 10.3760/cma.j.issn.0529-567x.2016.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
|
20
|
Xiao FY, Wang Q, Zheng RL, Chen M, Su TT, Sui L. [Diagnosis and treatment value of colposcopy and loop electrosurgical excision procedure in microinvasive cervical cancer: analysis of 135 cases]. Zhonghua Fu Chan Ke Za Zhi 2016; 51:186-91. [PMID: 27030497 DOI: 10.3760/cma.j.issn.0529-567x.2016.03.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To explore the sensitivity and specificity of colposcopy directed biopsy (CDB) and the value of loop electrosurgical excision procedure (LEEP) for the diagnosis and treatment of microinvasive cervical cancer (MCC). METHODS One hundred and thirty five patients with MCC were diagnosed with LEEP in Obstetrics and Gynecology Hospital, Fudan University from April 2008 to November 2010, and were retrospectively analyzed on CDB diagnoses and following treatment after LEEP. According to patient's desire for preservation of fertility and cone margin status, following strategies after LEEP included follow-up, second LEEP, hysterectomy, modified radical hysterectomy and radical hysterectomy. Single and multiple factors related to residual lesions after LEEP were analysed with Pearson Chi-square test and logistic regression model, respectively. RESULTS CDB diagnosed MCC with a sensitivity of 4.4 % (6/135), specificity of 100.0% (4 680/4 680), and false negative rate of 95.6% (129/135). Among the 135 patients, 29 did not receive further treatment in our hospital and lost contact. One hundred and six patients had secondary treatment or follow-up in our hospital, 4 of among which were closely followed up; one hundred and two received further treatment, which included 6 cases with second LEEP (3 received extrafascial hysterectomy after repeat LEEP), 59 cases hysterectomy, 14 cases modified radical hysterectomy and 26 cases radical hysterectomy. For factors related to residual lesions after LEEP, single factor analysis showed that the ratio of residual lesion in patients aged 27-39, 40-49 and 50-65 years were respectively 19.0% (11/58), 15.4% (10/65) and 5/12 (χ(2)=4.505, P=0.105). Residual lesions occurred in 24.7% (23/93) of patients with positive LEEP margins, which was more than that 7.1% (3/42) of patients with negative LEEP margins (χ(2)=5.756, P=0.016). The ratio of residual lesions in patients with positive endocervical, ectocervical and deep stromal margins were respectively 29.6%(8/27), 17.1%(7/41) and 30.6%(11/36; χ(2)= 2.275, P=0.321). Residual lesions in patients with or without lymph vascular space invasion (LVSI) were 2/7 and 18.8% (24/128), respectively (χ(2)=0.412, P=0.521). The ratio of residual lesions in patients with invasion depth of <1 mm was 17.1% (7/41), 1-<3 mm was 19.0% (16/84), and 3-5 mm was 3/10, with no significant difference among three groups (χ(2)=0.870, P=0.647). Logistic regression analysis showed positive cone margin (OR=5.069, P=0.014) and age (OR=1.080, P=0.024) were the independent risk factors of residual lesions after LEEP conization. CONCLUSIONS CDB alone is not adequate for the diagnosis of MCC. For young patients who desire to preserve fertility with a negative cone margin, close follow-up is acceptable. Cone margin status and age are two independent risk factors for residual lesions after LEEP.
Collapse
Affiliation(s)
- F Y Xiao
- Department of Gynecology, Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200011, China
| | | | | | | | | | | |
Collapse
|
21
|
Rudolf K, Umetsu D, Aliee M, Sui L, Jülicher F, Dahmann C. A local difference in Hedgehog signal transduction increases mechanical cell bond tension and biases cell intercalations along the Drosophila anteroposterior compartment boundary. Development 2015; 142:3845-58. [DOI: 10.1242/dev.125542] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Tissue organization requires the interplay between biochemical signaling and cellular force generation. The formation of straight boundaries separating cells with different fates into compartments is important for growth and patterning during tissue development. In the developing Drosophila wing disc, maintenance of the straight anteroposterior (AP) compartment boundary involves a local increase in mechanical tension at cell bonds along the boundary. The biochemical signals that regulate mechanical tension along the AP boundary, however, remain unknown. Here, we show that a local difference in Hedgehog signal transduction activity between anterior and posterior cells is necessary and sufficient to increase mechanical tension along the AP boundary. This difference in Hedgehog signal transduction is also required to bias cell rearrangements during cell intercalations to keep the characteristic straight shape of the AP boundary. Moreover, severing cell bonds along the AP boundary does not reduce tension at neighboring bonds, implying that active mechanical tension is upregulated, cell bond by cell bond. Finally, differences in the expression of the homeodomain-containing protein Engrailed also contribute to the straight shape of the AP boundary, independently of Hedgehog signal transduction and without modulating cell bond tension. Our data reveal a novel link between local differences in Hedgehog signal transduction and a local increase in active mechanical tension of cell bonds that biases junctional rearrangements. The large-scale shape of the AP boundary thus emerges from biochemical signals inducing patterns of active tension on cell bonds.
Collapse
Affiliation(s)
- Katrin Rudolf
- Institute of Genetics, Technische Universität Dresden, Dresden 01062, Germany
| | - Daiki Umetsu
- RIKEN Center for Developmental Biology, Kobe 650-0047, Japan
| | - Maryam Aliee
- Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Strasse 38, Dresden 01187, Germany
| | - Liyuan Sui
- Institute of Genetics, Technische Universität Dresden, Dresden 01062, Germany
| | - Frank Jülicher
- Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Strasse 38, Dresden 01187, Germany
| | - Christian Dahmann
- Institute of Genetics, Technische Universität Dresden, Dresden 01062, Germany
| |
Collapse
|
22
|
Shen J, Lu J, Sui L, Wang D, Yin M, Hoffmann I, Legler A, Pflugfelder GO. The orthologous Tbx transcription factors Omb and TBX2 induce epithelial cell migration and extrusion in vivo without involvement of matrix metalloproteinases. Oncotarget 2015; 5:11998-2015. [PMID: 25344916 PMCID: PMC4322970 DOI: 10.18632/oncotarget.2426] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [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: 06/02/2014] [Accepted: 09/02/2014] [Indexed: 01/06/2023] Open
Abstract
The transcription factors TBX2 and TBX3 are overexpressed in various human cancers. Here, we investigated the effect of overexpressing the orthologous Tbx genes Drosophila optomotor-blind (omb) and human TBX2 in the epithelium of the Drosophila wing imaginal disc and observed two types of cell motility. Omb/TBX2 overexpressing cells could move within the plane of the epithelium. Invasive cells migrated long-distance as single cells retaining or regaining normal cell shape and apico-basal polarity in spite of attenuated apical DE-cadherin concentration. Inappropriate levels of DE-cadherin were sufficient to drive cell migration in the wing disc epithelium. Omb/TBX2 overexpression and reduced DE-cadherin-dependent adhesion caused the formation of actin-rich lateral cell protrusions. Omb/TBX2 overexpressing cells could also delaminate basally, penetratingthe basal lamina, however, without degradation of extracellular matrix. Expression of Timp, an inhibitor of matrix metalloproteases, blocked neither intraepithelial motility nor basal extrusion. Our results reveal an MMP-independent mechanism of cell invasion and suggest a conserved role of Tbx2-related proteins in cell invasion and metastasis-related processes.
Collapse
Affiliation(s)
- Jie Shen
- Department of Entomology, China Agricultural University, Beijing, China
| | - Juan Lu
- Department of Entomology, China Agricultural University, Beijing, China
| | - Liyuan Sui
- Department of Entomology, China Agricultural University, Beijing, China
| | - Dan Wang
- Department of Entomology, China Agricultural University, Beijing, China
| | - Meizhen Yin
- Key Laboratory of Carbon Fiber and Functional Polymers, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, China
| | - Inka Hoffmann
- Institute of Genetics, Johannes Gutenberg-University, Mainz, Germany
| | - Anne Legler
- Institute of Genetics, Johannes Gutenberg-University, Mainz, Germany
| | | |
Collapse
|
23
|
Zhang M, Sui L, Li Y, Chen Z, Zhang Y, Liu T, Xu J, Zhang X, Zhang Y. 96 EFFECT OF TWO DIFFERENT EMBRYO TRANSPORTERS ON DEVELOPMENT OF PORCINE PARTHENOGENETIC EMBRYOS. Reprod Fertil Dev 2014. [DOI: 10.1071/rdv26n1ab96] [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: 11/23/2022] Open
Abstract
In the present study, we investigated two embryo transport methods, including a commercial cell transporter and a self-made, simple embryo transporter, for the pre-implantation development of porcine parthenogenetic embryos. The cleaved embryos were randomly distributed between the two types of embryo transport methods and were conserved in vitro for 2, 3, and 4 h. Embryo development efficiency testing and blastocyst differential staining were utilized to assess embryo developmental quality. There were no significant differences in embryo early development efficiency between the commercial cell transporter group, self-made embryo transporter group, and control group. The blastocyst hatch rate (7.75 ± 2.96%) in the self-made simple embryo transport method maintained for 3 h was significantly higher compared to the other groups (P < 0.05). The results (Table 1) showed that blastocyst differential staining showed that the ratio of inner cell mass (ICM) to total cells in both the 2-h-transport group and 3-h-transport group from the self-made simple embryo transport method and the 4-h-transport group from the commercial cell transporter were significantly higher than other groups (P < 0.05).The self-made simple embryo transporter and commercial cell transporter are both effective for transport and conservation of embryos for 3 h.
Table 1.Effect of different modes of transport and transit time on embryo development1
Collapse
|
24
|
Sui L, Chang G, Liu Y, Deng Y. Effect of poly-hydroxybutyrate on growth and enzymatic activity of Chinese mitten crab, Eriocheir sinensis, juvenile. Commun Agric Appl Biol Sci 2013; 78:437-440. [PMID: 25141735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
|
25
|
Sui L, Pflugfelder GO, Shen J. The Dorsocross T-box transcription factors promote tissue morphogenesis in the Drosophila wing imaginal disc. Development 2012; 139:2773-82. [PMID: 22782723 DOI: 10.1242/dev.079384] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The Drosophila wing imaginal disc is subdivided into notum, hinge and blade territories during the third larval instar by formation of several deep apical folds. The molecular mechanisms of these subdivisions and the subsequent initiation of morphogenic processes during metamorphosis are poorly understood. Here, we demonstrate that the Dorsocross (Doc) T-box genes promote the progression of epithelial folds that not only separate the hinge and blade regions of the wing disc but also contribute to metamorphic development by changing cell shapes and bending the wing disc. We found that Doc expression was restricted by two inhibitors, Vestigial and Homothorax, leading to two narrow Doc stripes where the folds separating hinge and blade are forming. Doc mutant clones prevented the lateral extension and deepening of these folds at the larval stage and delayed wing disc bending in the early pupal stage. Ectopic Doc expression was sufficient to generate deep apical folds by causing a basolateral redistribution of the apical microtubule web and a shortening of cells. Cells of both the endogenous blade/hinge folds and of folds elicited by ectopic Doc expression expressed Matrix metalloproteinase 2 (Mmp2). In these folds, integrins and extracellular matrix proteins were depleted. Overexpression of Doc along the blade/hinge folds caused precocious wing disc bending, which could be suppressed by co-expressing MMP2RNAi.
Collapse
Affiliation(s)
- Liyuan Sui
- Department of Entomology, China Agricultural University, Beijing, China
| | | | | |
Collapse
|
26
|
Sui L, Cai J, Sun H, Wille M, Bossier P. Effect of poly-β-hydroxybutyrate on Chinese mitten crab, Eriocheir sinensis, larvae challenged with pathogenic Vibrio anguillarum. J Fish Dis 2012; 35:359-364. [PMID: 22417317 DOI: 10.1111/j.1365-2761.2012.01351.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
This study investigated the protective effect of poly-β-hydroxybutyrate (PHB) on Chinese mitten crab, Eriocheir sinensis, zoea larvae challenged with pathogenic Vibrio anguillarum. PHB was delivered to the crab larvae through rotifer and Artemia bioencapsulation. Zoea 3 larvae were challenged with V. anguillarum at a final concentration of 10(5) CFU mL(-1). PHB-enriched rotifers and Artemia nauplii were added to the culture water 24 h prior to, upon and 24 h after challenge. The results confirmed that PHB could enhance the survival and growth of unexposed E. sinensis larvae. Moreover, PHB protected larvae from the pathogen as the larvae fed PHB-enriched live food showed the highest survival and development rate in all challenged groups (P < 0.05). Furthermore, larval performance was the best when PHB was delivered to the larvae 24 h before challenge (P < 0.05). In conclusion, our results indicate that PHB can be used as part of an effective strategy to protect E. sinensis larvae from V. anguillarum resulting in higher survival and better growth, especially when applied before the challenge.
Collapse
Affiliation(s)
- L Sui
- Tianjin Key Laboratory of Marine Resources & Chemistry, Tianjin University of Science & Technology, Tianjin, China.
| | | | | | | | | |
Collapse
|
27
|
Sui L, Huang L, Podsiadlo P, Kotov NA, Kieffer J. Brillouin Light Scattering Investigation of the Mechanical Properties of Layer-by-Layer Assembled Cellulose Nanocrystal Films. Macromolecules 2010. [DOI: 10.1021/ma1016488] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- L. Sui
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - L. Huang
- Department of Materials Science and Engineering, Rensselaer, Troy, New York 12180, United States
| | - P. Podsiadlo
- Argonne National Laboratory Center for Nanoscale Materials, Argonne, Illinois 60439, United States
| | - N. A. Kotov
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
- Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - J. Kieffer
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| |
Collapse
|
28
|
Dong Y, Sui L, Yamaguchi F, Kamitori K, Hirata Y, Hossain MA, Suzuki A, Holley MC, Tokuda M. Phosphatase and tensin homolog deleted on chromosome 10 regulates sensory cell proliferation and differentiation of hair bundles in the mammalian cochlea. Neuroscience 2010; 170:1304-13. [PMID: 20727948 DOI: 10.1016/j.neuroscience.2010.08.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2010] [Revised: 08/05/2010] [Accepted: 08/12/2010] [Indexed: 01/16/2023]
Abstract
Phosphatase and tensin homolog deleted on chromosome 10 (PTEN) is a tumor suppressor gene that regulates cell proliferation, differentiation and growth. It regulates neural and glioma stem/progenitor cell renewal and PTEN deletion can drive expansion of epithelial progenitors in the lung, enhancing their capacity for regeneration. Because it is expressed at relatively high levels in developing mammalian auditory hair cells we have analyzed the phenotype of the auditory epithelium in PTEN knock-out mice. PTEN(+/-) heterozygous littermates have only one functional copy of the gene and show clear evidence for haploinsufficiency in the organ of Corti. Auditory sensory epithelial progenitors withdraw from the cell cycle later than in wild-type animals and this is associated with increases in the numbers of both inner and outer hair cells. The cytoskeletal differentiation of hair cells was also affected. While many hair bundles on the hair cells appeared to develop normally, others were structurally disorganized and a number were missing, apparently lost after they had been formed. The results show that PTEN plays a novel role in regulating cell proliferation and differentiation of hair bundles in auditory sensory epithelial cells and suggest that PTEN signaling pathways may provide therapeutic targets for auditory sensory regeneration.
Collapse
Affiliation(s)
- Y Dong
- Department of Cell Physiology, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Miki-cho, Kita-gun, Kagawa 761-0793, Japan.
| | | | | | | | | | | | | | | | | |
Collapse
|
29
|
Kobayashi NR, Sui L, Tan PSL, Lim EKH, Chan J, Choolani M, Crook JM. Modelling disrupted-in-schizophrenia 1 loss of function in human neural progenitor cells: tools for molecular studies of human neurodevelopment and neuropsychiatric disorders. Mol Psychiatry 2010; 15:672-5. [PMID: 20010895 DOI: 10.1038/mp.2009.131] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
30
|
Sun Z, Ye S, Qian Y, Sui L. Intensive insulin therapy reduces the urinary intercellular adhesion molecule-1 excretion in patients with Type 2 diabetes mellitus. J Endocrinol Invest 2009; 32:877-80. [PMID: 20134257 DOI: 10.1007/bf03345765] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
OBJECTIVE To observe the change of urinary intercellular adhesion molecule-1 (ICAM-1) excretion in the patients with Type 2 diabetes mellitus (T2DM) compared to normal control group, and to investigate the effect and significance of insulin intensive therapy on the urinary ICAM-1 excretion. METHOD We examined the urinary ICAM-1 and creatinine (Cr) of random urine in 20 patients with T2DM and 20 normal subjects using enzyme-linked immunosorbent assay. All diabetics were given intensive insulin therapy for 2 weeks, urinary ICAM- 1 and Cr was examined once again at the end of observation. RESULTS Compared with the normal control group, not only the fasting blood glucose (FBG), post-prandial 2-h blood glucose (P2hBG), and glycosylated hemoglobin (HbA1c), but also the urinary ICAM-1 to urinary Cr ratio in patients with T2DM increased significantly (p<0.01). The urinary ICAM-1/urinary Cr ratio of diabetics had a positive correlation with FBG (r=0.51, p<0.01), P2hBG (r=0.496, p<0.01), and HbA1c (r=0.478, p<0.05), respectively. After 2 weeks of intensive insulin therapy in Type 2 diabetics, both the level of blood glucose and the level of urinary ICAM-1/urinary Cr ratio had a remarkable decrease compared with the basal values (p<0.01). CONCLUSION Intensive insulin therapy is capable of alleviating the enhanced local inflammation reaction of renal tissue under hyperglycemia state with the reduction of urinary ICAM-1 excretion.
Collapse
Affiliation(s)
- Z Sun
- Department of Endocrinology, Anhui Provincal Hospital affiliated to Anhui Medical University, No.17 Lujiang Road, Hefei, Anhui, 230001, PR China
| | | | | | | |
Collapse
|
31
|
Sui L, Wang J, Li BM. Role of the phosphoinositide 3-kinase-Akt-mammalian target of the rapamycin signaling pathway in long-term potentiation and trace fear conditioning memory in rat medial prefrontal cortex. Learn Mem 2008; 15:762-76. [DOI: 10.1101/lm.1067808] [Citation(s) in RCA: 157] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
32
|
Zhang F, Sui L, Xin T. Correlations of BMI-1 expression and telomerase activity in ovarian cancer tissues. Exp Oncol 2008; 30:70-74. [PMID: 18438345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
AIM To investigate the correlation between oncoprotein Bmi-1 and telomerase activity in ovarian cancer tissues. METHODS SP immunohistochemistry was adopted to detect the expression of Bmi-1 protein in tissues of 47 ovarian epithelial cancer cases. Modified telomeric repeat amplification protocol (TRAP, silver staining technique) was used to detect the telomerase activity. RESULTS While in 80.85% (38/47) of ovarian epithelial cancer cases Bmi-1 protein was overexpressed, 46.81% (22/47) had very strong expression level. Bmi-1 expression levels in ovarian carcinoma tissue differ depending on tissue grade (higher for G3 cancer cases- 93.10% than for grade G2 cases - 61.11%) and the stage of the disease (lower for phase II and phase III cases - 66.67% than for phase IV cases- 92.31%). In ovarian epithelial cancer tissues, 87.23% (41/47) demonstrated positive telomerase activity in contrast to zero activity in normal tissues. Majority (90.24%) of specimens with positive telomerase activity possessed high Bmi-1 expression levels. Spearman correlation analysis indicated that expression of Bmi-1 protein was positively correlated with the elevated telomerase activity. CONCLUSIONS Bmi-1 protein is highly expressed in ovarian epithelial cancer tissues, and its expression level correlates with histological grade and clinical phase of the patients. Elevation of Bmi-1 expression is closely correlated to the increased telomerase activity.
Collapse
Affiliation(s)
- F Zhang
- Affiliated Oncology Hospital of Harbin Medical University, Harbin, Heilongjiang, China
| | | | | |
Collapse
|
33
|
Gilbert ME, Sui L, Walker MJ, Anderson W, Thomas S, Smoller SN, Schon JP, Phani S, Goodman JH. Thyroid hormone insufficiency during brain development reduces parvalbumin immunoreactivity and inhibitory function in the hippocampus. Endocrinology 2007; 148:92-102. [PMID: 17008398 DOI: 10.1210/en.2006-0164] [Citation(s) in RCA: 102] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Thyroid hormones are necessary for brain development. gamma-Amino-butyric acid (GABA)ergic interneurons comprise the bulk of local inhibitory circuitry in brain, many of which contain the calcium binding protein, parvalbumin (PV). A previous report indicated that severe postnatal hypothyroidism reduces PV immunoreactivity (IR) in rat neocortex. We examined PV-IR and GABA-mediated synaptic inhibition in the hippocampus of rats deprived of thyroid hormone from gestational d 6 until weaning on postnatal d 30. Pregnant dams were exposed to propylthiouracil (0, 3, 10 ppm) via the drinking water, which decreased maternal serum T(4) by approximately 50-75% and increased TSH. At weaning, T(4) was reduced by approximately 70% in offspring in the low-dose group and fell below detectable levels in high-dose animals. PV-IR was diminished in the hippocampus and neocortex of offspring killed on postnatal d 21, an effect that could be reversed by postnatal administration of T(4). Dose-dependent decreases in the density of PV-IR neurons were observed in neocortex and hippocampus, with the dentate gyrus showing the most severe reductions (50-75% below control counts). Altered staining persisted to adulthood despite the return of thyroid hormones to control levels. Developmental cross-fostering and adult-onset deprivation studies revealed that early postnatal hormone insufficiency was required for an alteration in PV-IR. Synaptic inhibition of the perforant path-dentate gyrus synapse evaluated in adult offspring, in vivo, revealed dose-dependent reductions in paired pulse depression indicative of a suppression of GABA-mediated inhibition. These data demonstrate that moderate degrees of thyroid hormone insufficiency during the early postnatal period permanently alters interneuron expression of PV and compromises inhibitory function in the hippocampus.
Collapse
Affiliation(s)
- M E Gilbert
- Neurotoxicology Division, National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina 27711, USA.
| | | | | | | | | | | | | | | | | |
Collapse
|
34
|
Sui L, Wang F, Liu F, Wang J, Li BM. Dorsal hippocampal administration of triiodothyronine enhances long-term memory for trace cued and delay contextual fear conditioning in rats. J Neuroendocrinol 2006; 18:811-9. [PMID: 17026530 DOI: 10.1111/j.1365-2826.2006.01480.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Thyroid hormones play critical roles in brain maturation and cognitive functions. The present study investigated the role of thyroid hormone in emotional learning and memory using trace and delay contextual and cued fear conditioning tasks, respectively. Rats were administered triiodothyronine (T3) into the dorsal hippocampal area 10 min before training or immediately after training, and were scored for freezing behaviour in the same context and in a novel context with and without an auditory cue that had been paired previously with an aversive stimulus, a foot shock. Rats administered T3 before and after training both exhibited significantly increased long-term fear memory in the trace cued and the delay contextual fear conditioning procedures compared to their control groups. The T3-administered rats were not significantly different from their respective controls on the acquisition and short-term fear memory in the trace and delay fear conditioning tasks. No significant difference on long-term trace contextual and delay cued fear memory, respectively, was found. These results indicate that the observed T3-induced enhancement of long-term contextual and cued fear memory was specific to the hippocampus-dependent conditioning tasks. These findings are the first to demonstrate that infusion of T3 into the dorsal hippocampus can improve performance on an emotional memory task.
Collapse
Affiliation(s)
- L Sui
- Laboratory of Higher Brain Functions, Institute of Neurobiology, Fudan University, Shanghai, China.
| | | | | | | | | |
Collapse
|
35
|
Sui L, Xie F, Cao B. Management of abnormal uterine hemorrhage with atypical endometrial hyperplasia by transcervical resection of endometrium. Int J Gynecol Cancer 2006; 16:1482-6. [PMID: 16803556 DOI: 10.1111/j.1525-1438.2006.00558.x] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
The aim of the study was to assess the feasibility and effect of treating atypical endometrial hyperplasia (AEH) with transcervical resection of endometrium (TCRE). Five cases of AEH incapable of hysterectomy for various reasons were treated with TCRE. All patients were followed up for 3-4 years postoperation to evaluate the thickness of endometrium, uterine cavity, and prognosis of the disease. All the patients provided informed consent for TCRE. In all five cases treated with TCRE, case 1 was for senility, hypertension, diabetes mellitus, and obesity; case 4 for senility, obsolete cerebral infarction, and hemiplegia; case 5 for uremia and chronic dysfunction of coagulation after renal transplantation; cases 2 and 3 for rejection of hysterectomy. All cases were followed up for more than 3 years after operation. Four had amenorrhea and one had dropping menses. The thickness of endometrium was no more than 5 mm in all the cases. TCRE is one available microinvasive surgery alternative to hysterectomy for AEH patients contraindicated to hysterectomy.
Collapse
Affiliation(s)
- L Sui
- Obstetrics and Gynecology Hospital, Diagnostic & Treatment Center for Cervical Disease, Fudan University, 419 Fang-xie Road, Shanghai 200011, China.
| | | | | |
Collapse
|
36
|
Sui L, Wang F, Li BM. Adult-onset hypothyroidism impairs paired-pulse facilitation and long-term potentiation of the rat dorsal hippocampo-medial prefrontal cortex pathway in vivo. Brain Res 2006; 1096:53-60. [PMID: 16725120 DOI: 10.1016/j.brainres.2006.04.042] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2005] [Revised: 04/06/2006] [Accepted: 04/10/2006] [Indexed: 11/29/2022]
Abstract
Thyroid hormones are critical for the maturation and function of the central nervous system. Insufficiency of thyroid hormones in the adulthood causes a wide range of cognitive dysfunctions, including deficits in learning and memory. The present study investigated whether adult-onset hypothyroidism would alter synaptic functions in the dorsal hippocampo-medial prefrontal cortex (mPFC) pathway, a neural pathway important for learning and memory. Adult hypothyroidism was induced by oral administration of 1% (g/l) antithyroid acting drug 6-n-propyl-2-thiouracil (PTU) to adult male Sprague-Dawley rats for 4 weeks. Postsynaptic potentials (PSP) were recorded in the mPFC by stimulating the dorsal hippocampal CA1 region in vivo. Basal synaptic transmission was evaluated by comparing input-output relationships. Paired-pulse facilitation and long-term potentiation were recorded to examine short- and long-term synaptic plasticity. Adult-onset hypothyroidism did not change the basal synaptic transmission, but significantly reduced paired-pulse facilitation and long-term potentiation of PSP. These inhibitions can be restored by thyroid hormone replacement. The results suggest that such alterations in synaptic plasticity of the dorsal hippocampo-mPFC pathway might contribute to understanding basic mechanisms underlying learning and memory deficits associated with adult-onset hypothyroidism.
Collapse
Affiliation(s)
- L Sui
- Laboratory of Higher Brain Functions, Institute of Neurobiology, Fudan University, Shanghai, PR China
| | | | | |
Collapse
|
37
|
Sui L, Xie F, Cao B. Management of abnormal uterine hemorrhage with atypical endometrial hyperplasia by transcervical resection of endometrium. Int J Gynecol Cancer 2006. [DOI: 10.1136/ijgc-00009577-200605000-00088] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
The aim of the study was to assess the feasibility and effect of treating atypical endometrial hyperplasia (AEH) with transcervical resection of endometrium (TCRE). Five cases of AEH incapable of hysterectomy for various reasons were treated with TCRE. All patients were followed up for 3–4 years postoperation to evaluate the thickness of endometrium, uterine cavity, and prognosis of the disease. All the patients provided informed consent for TCRE. In all five cases treated with TCRE, case 1 was for senility, hypertension, diabetes mellitus, and obesity; case 4 for senility, obsolete cerebral infarction, and hemiplegia; case 5 for uremia and chronic dysfunction of coagulation after renal transplantation; cases 2 and 3 for rejection of hysterectomy. All cases were followed up for more than 3 years after operation. Four had amenorrhea and one had dropping menses. The thickness of endometrium was no more than 5 mm in all the cases. TCRE is one available microinvasive surgery alternative to hysterectomy for AEH patients contraindicated to hysterectomy.
Collapse
|
38
|
Sui L, Anderson WL, Gilbert ME. Impairment in short-term but enhanced long-term synaptic potentiation and ERK activation in adult hippocampal area CA1 following developmental thyroid hormone insufficiency. Toxicol Sci 2005; 85:647-56. [PMID: 15673845 DOI: 10.1093/toxsci/kfi095] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Thyroid hormones are critical for the development and maturation of the central nervous system. Insufficiency of thyroid hormones during development impairs performance on tasks of learning and memory that rely upon the hippocampus and impairs synaptic function in young hypothyroid animals. The present study was designed to determine if perturbations in synaptic function persist in adult euthyroid animals exposed developmentally to insufficient levels of hormone. Pre- and postnatal thyroid hormone insufficiency was induced by administration of 3 or 10 ppm propylthiouracil (PTU) to pregnant and lactating dams via the drinking water from gestation day (GD) 6 until postnatal day (PN) 30. This regimen produced a graded level of hormonal insufficiency in the dam and the offspring. Population spike and population excitatory postsynaptic potentials (EPSP) were recorded at the pyramidal cell layer and the stratum radiatum, respectively, in area CA1 of hippocampal slices from adult male offspring. PTU exposure increased baseline synaptic transmission, reduced paired-pulse facilitation, and increased the magnitude of the population spike long-term potentiation (LTP). Phosphorylation of the extracellular signal-regulated kinases (ERK1 and ERK2) was increased as a function of LTP stimulation in slices from PTU-exposed adult animals. On the other hand, no differences in the basal levels of synaptic proteins implicated in synaptic plasticity (total ERK, synapsin, growth-associated protein-43, and neurogranin) were detected. These results reinforce previous findings of persistent changes in synaptic function and, importantly extend these observations to moderate levels of thyroid hormone insufficiency that do not induce significant toxicity to the dams or the offspring. Such alterations in hippocampal synaptic function may contribute to persistent behavioral deficits associated with developmental hypothyroidism.
Collapse
Affiliation(s)
- L Sui
- National Research Council, Washington, DC 20001, USA
| | | | | |
Collapse
|
39
|
Meacham CA, Freudenrich TM, Anderson WL, Sui L, Lyons-Darden T, Barone S, Gilbert ME, Mundy WR, Shafer TJ. Accumulation of methylmercury or polychlorinated biphenyls in in vitro models of rat neuronal tissue. Toxicol Appl Pharmacol 2004; 205:177-87. [PMID: 15893545 DOI: 10.1016/j.taap.2004.08.024] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2004] [Revised: 08/13/2004] [Accepted: 08/17/2004] [Indexed: 11/28/2022]
Abstract
In vivo exposure levels for neurotoxicants are often reported in parts per million (ppm) concentration in tissue, whereas exposure levels in experiments utilizing in vitro models are most commonly reported in micromolar (muM) concentration in the exposure solution. The present experiments sought to determine whether or not in vitro solution concentration was an appropriate dose-metric for comparison to in vivo tissue levels for lipophilic compounds. To do so, the accumulation of the polychlorinated biphenyl (PCB) mixture Aroclor 1254 (A1254) or methylmercury (MeHg) was examined in three commonly utilized in vitro neuronal tissue models: nerve growth factor differentiated pheochromocytoma (PC12) cells, primary cultures of rat neocortical cells, and adult rat hippocampal slices. Tissues were exposed to A1254 (0.65 ppm) or to MeHg (0.0033-0.33 ppm) in serum-free media for 1 or 24 h. Total PCB or mercury accumulation was measured by dual column gas chromatography with electron capture detection or by cold vapor atomic absorption, respectively. PC12 cells accumulated 66.7 and 103.8 ppm PCBs after 1 and 24 h exposure to A1254. Neocortical neurons also accumulated significant concentrations of PCBs, but less so than PC12 cells. After 1 h exposure to 0.65 ppm A1254, slices contained 3.46 and 0.81 ppm PCBs when exposed in a static and perfused system, respectively. After 1 h exposure to 0.0033, 0.033, and 0.33 ppm MeHg, PC12 cells contained 0.3, 2.2, and 17.7 ppm mercury, respectively; after 24 h, PC12 cells contained 0.4, 2.8, and 21.9 ppm. Hippocampal slices accumulated 1.7 and 4.8 ppm mercury after 1 and 3 h exposure to 0.33 ppm MeHg. For comparison, mercury accumulation in rat fetal and pup brain tissue after maternal exposure [0, 0.1, 1.0, or 2.0 mg/kg/day MeHg from gestational day (GD) 6-15] ranged from 0.05 to 7.89 ppm in 0.1 mg/kg dose animals on postnatal day 10 and 2.0 mg/kg dose animals on GD16, respectively. These results demonstrate that accumulation of PCBs and MeHg in vitro is tissue-, time-, and concentration-dependent and indicates that tissue levels rather than exposure concentrations are a more appropriate metric for comparison of in vitro to in vivo effects.
Collapse
Affiliation(s)
- C A Meacham
- Neurotoxicology Division, National Health and Environmental Effects Research Laboratory/ORD, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, USA
| | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Sui L, Dong Y, Ohno M, Watanabe Y, Sugimoto K, Tai Y, Tokuda M. Jab1 expression is associated with inverse expression of p27(kip1) and poor prognosis in epithelial ovarian tumors. Clin Cancer Res 2001; 7:4130-5. [PMID: 11751512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
PURPOSE Jab1 (Jun activation domain-binding protein 1) has been described as a coactivtor of AP1 transcription factor, and is a subunit of a large protein complex (called the COP9 signalosome). Recent study (K. Tomoda et al., Nature (Lond.), 398: 160-165, 1999) found that Jab1 protein can cause breakdown of p27(kip1) protein in mammalian cells. To investigate whether Jab1 expression is correlated with p27(kip1) protein levels as well as how it might be clinically relevant, we evaluated the expression of Jab1 in a group of epithelial ovarian tumors. EXPERIMENTAL DESIGN Immunohistochemical analysis was performed in 80 cases of ovarian tumors (33 benign ovarian tumors and 47 ovarian carcinomas). Twenty-six of the 80 cases were evaluated by Western blot analysis. RESULTS Jab1 overexpression was detected in 68.1% (32 of 47) of malignant tumors and 33.3% (11 of 33) of benign tumors. The positive ratio of Jab1 was increased from benign to malignant ovarian tumors (P = 0.002). A negative correlation between Jab1 and p27(kip1) expression was found in both benign (P = 0.003) and malignant (P = 0.002) ovarian tumors. No significant correlation was observed between Jab1 overexpression and clinicopathological parameters. Kaplan-Meier survival analysis showed that Jab1 overexpression was significantly associated with poor prognosis of patients (P = 0.049). CONCLUSIONS Jab1 expression is inversely correlated with p27(kip1) expression levels, and Jab1, as a negative regulator of p27(kip1), may be associated with the progression and prognosis of epithelial ovarian tumors.
Collapse
Affiliation(s)
- L Sui
- Department of Perinato-Gynecology, Kagawa Medical University, 1750-1 Ikenobe, Miki-Cho, Kida-Gun, Kagawa 761-0793, Japan
| | | | | | | | | | | | | |
Collapse
|
41
|
Sui L, Dong Y, Ohno M, Sugimoto K, Tai Y, Hando T, Tokuda M. Implication of malignancy and prognosis of p27(kip1), Cyclin E, and Cdk2 expression in epithelial ovarian tumors. Gynecol Oncol 2001; 83:56-63. [PMID: 11585414 DOI: 10.1006/gyno.2001.6308] [Citation(s) in RCA: 72] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
OBJECTIVE The aim of this study was to further evaluate whether the expression of p27(kip1), cyclin E, and cdk2 is related to the malignancy of ovarian tumors and whether their expressions, alone or in combination, are associated with prognosis in epithelial ovarian carcinoma. METHODS Immunohistochemical analysis using anti-p27(kip1), anti-cyclinE, and anti-cdk2 antibodies was carried out for 103 cases consisting of benign, borderline, and malignant ovarian tumors, and Western blot analysis and cdk2 activity assay were performed in 26 fresh ovarian tumor samples. RESULTS p27(kip1) expression was reduced in ovarian carcinomas in contrast to benign and borderline tumors. The expression of cyclin E and cdk2 gradually increased from benign to borderline to malignant tumors. Kaplan-Meier survival analysis showed that patients with p27(kip1) expression had a high overall survival rate. Patients with cyclin E overexpression had a low overall survival rate. When the combination of these proteins was analyzed, patients with the p27(kip1) (-)/cyclin E (++)/cdk2 (++) phenotype were significantly associated with the poorest overall survival. In multivariate Cox regression analysis, the combined phenotype of p27(kip1) (-)/cyclin E (++)/cdk2 (++) was independently related to poor prognosis. CONCLUSIONS Our results suggest that loss of p27(kip1) expression and overexpression of cyclin E or cdk2 were significantly associated with malignancy in ovarian tumors. p27(kip1) and cyclin E proteins may be valuable prognostic factors for epithelial ovarian carcinoma patients. Furthermore, the combined evaluation of p27(kip1)/cyclin E/cdk2 may provide the most important prognostic implication.
Collapse
Affiliation(s)
- L Sui
- Department of Perinato-Gynecology, Kagawa Medical University, Kagawa 761-0793, Japan
| | | | | | | | | | | | | |
Collapse
|
42
|
Luo K, Zhang W, Sui L, Li N, Zhang M, Ma X, Zhang L, Cao X. DIgR1, a novel membrane receptor of the immunoglobulin gene superfamily, is preferentially expressed by antigen-presenting cells. Biochem Biophys Res Commun 2001; 287:35-41. [PMID: 11549249 DOI: 10.1006/bbrc.2001.5539] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A novel membrane receptor of immunoglobulin gene superfamily (IgSF) has been identified from mouse dendritic cells (DC) and designated as DC-derived Ig-like receptor 1 (DIgR1). It encodes a 228-amino-acid (aa) residue polypeptide with a 21-aa signal peptide, a 20-aa transmembrane region, a 189-aa extracellular region, and a 19 aa intracellular region. Its extracellular region contains a single V domain of Ig. So it is a novel type I transmembrane glycoprotein of IgSF. DIgR1 shows significant homologies to human CMRF-35 antigens and polymeric immunoglobulin receptors (pIgR). The mRNA expression of DIgR1 was highly abundant in mouse spleen. The preferential expression of DIgR1 mRNA is observed in the known antigen-presenting cells (APC) including DC, monocytes/macrophages, and B lymphocytes. A 40 kDa of protein in NIH/3T3 cells transfected with the DIgR1 cDNA was detected by Western blot analysis using anti-DIgR1 polyclonal antibodies. The expression of DIgR1 protein on DC is not regulated by LPS stimulation. Further study should be conducted to investigate what were biological functions of DIgR1 in the immunobiology of APC.
Collapse
Affiliation(s)
- K Luo
- Institute of Immunology, Zhejiang University, 353 Yanan Road, Hangzhou, 310031, People's Republic of China
| | | | | | | | | | | | | | | |
Collapse
|
43
|
Kohzato N, Dong Y, Sui L, Masaki T, Nagahata S, Nishioka M, Konishi R, Tokuda M. Overexpression of cyclin E and cyclin-dependent kinase 2 is correlated with development of hepatocellular carcinomas. Hepatol Res 2001; 21:27-39. [PMID: 11470626 DOI: 10.1016/s1386-6346(00)00150-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Mammalian cell cycle progression is regulated by the combined action of cyclins/cyclin-dependent kinases (CDKs) and CDK inhibitors. Abnormal expression as well as interaction of these proteins may result in malignant transformation of cells. To further address the role of these cell cycle proteins in hepatocellular carcinomas, we analyzed the expression of cyclin E and CDK2. A panel of livers with human hepatocellular carcinoma, liver cirrhosis, and chronic hepatitis were used as a human experimental system. The inbred LEC (Long-Evans with a cinnamon-like coat color) rats were used as an animal experimental HCC model. Immunohistochemical staining of serial paraffin sections was performed using antibodies to cyclin E and CDK2. The results showed that cyclin E and CDK2 were concurrently overexpressed in hepatocellular carcinomas both in human and rat livers. Western blot analysis and CDK2 kinase assay demonstrated expression levels of cyclin E and CDK2 and CDK2 kinase activity, respectively, and both were shown to increase along with the development of hepatocellular carcinomas. Analysis of the correlation between expression of cyclin E and CDK2 and clinicopathological parameters revealed a significant correlation between expression of cyclin E and tumor grade (P=0.013), and PCNA index (P=0.006) as well as CDK2 expression (P=0.015). Overexpression of CDK2 tended to be associated with poorly differentiated HCCs. The results suggest that overexpression of cyclin E and CDK2 plays an important role in the development of hepatocellular carcinoma.
Collapse
Affiliation(s)
- N Kohzato
- Departments of Oral and Maxillofacial Surgery, Faculty of Medicine, Kagawa Medical University, Kagawa, Japan
| | | | | | | | | | | | | | | |
Collapse
|
44
|
Abstract
Cyclin D1 and its catalytic partner CDK4 are known to play important roles in the G1/S checkpoint of the cell cycle. The complex formed by CDK4 and cyclin D1 has been strongly implicated in the control of cell proliferation and prognoses in human malignancies. We investigated the immunohistochemical expression of cyclin D1, CDK4 and proliferating cell nuclear antigen (PCNA) in 102 patients with laryngeal squamous cell carcinoma (LSCC). Cyclin D1 overexpression was observed in 59 cases (57.8%) of LSCC, and was significantly correlated with tumor site, tumor size, lymph node metastasis and advanced stage. CDK4 overexpression was observed in 48 cases (47.1%), and was significantly correlated with tumor size and advanced stage. Cyclin D1 and CDK4 expression was significantly associated with cell proliferation measured by PCNA (r = 0.812, p < 0.0001 and r = 0.725, p < 0.0001, respectively). The Kaplan-Meier analysis showed that cyclin D1 overexpression was significantly associated with disease-free survival and overall survival. CDK4 overexpression was significantly associated with overall survival. When cyclin D1 and CDK4 are combined, the patients with co-overexpression of cyclin D1-CDK4 revealed the poorest overall survival. Additionally, in early-stage (I-II) cases, co-overexpression of cyclin D1-CDK4 was also revealed to possess a significant prognostic role. By multivariate analysis, cyclin D1 overexpression, lymph node metastasis and advanced stage were independent prognostic factors for disease-free survival. Cyclin D1 overexpression, CDK4 overexpression, tumor grade, lymph node metastasis and advanced stage were independent prognostic factors for overall survival. These findings indicate that cyclin D1 and CDK4 overexpression and/or co-overexpression of these proteins may play a pivotal role in the biological behavior of LSCC and may provide a strong prognostic implication.
Collapse
Affiliation(s)
- Y Dong
- Department of Physiology, Kagawa Medical University, Kagawa, Japan
| | | | | | | | | |
Collapse
|
45
|
Zhang W, Mi J, Li N, Sui L, Wan T, Zhang J, Chen T, Cao X. Identification and characterization of DPZF, a novel human BTB/POZ zinc finger protein sharing homology to BCL-6. Biochem Biophys Res Commun 2001; 282:1067-73. [PMID: 11352661 DOI: 10.1006/bbrc.2001.4689] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The C2H2 zinc finger protein family is one of the largest families of transcription factors. We identified a novel BTB/POZ zinc finger gene from human dendritic cells (DC), which encodes a 733-residue protein with a BTB/POZ domain at the N-terminal and 4 C2H2 zinc fingers at C-terminal. It was designated dendritic cell-derived BTB/POZ zinc finger (DPZF). DPZF protein shares closest homology to BCL-6, with the highest homology present in the BTB/POZ and zinc finger domains. Like BCL-6, DPZF gene is localized on chromosome 3. It is widely expressed in hematopoietic tissues, including DC, monocytes, B cells, and T cells. DPZF protein expression is detectable in lymphoid neoplasm with a molecular mass of 100 kD, especially in B lymphoma. These indicate that DPZF may be a transcription factor closely related to BCL-6, and may be involved in hematopoiesis, oncogenesis, and immune responses.
Collapse
Affiliation(s)
- W Zhang
- Institute of Immunology, Second Military Medical University, 800 Xiangyin Road, Shanghai, 200433, People's Republic of China
| | | | | | | | | | | | | | | |
Collapse
|
46
|
Abstract
Automated left-ventricle (LV) boundary delineation from contrast ventriculograms has been studied for decades. Unfortunately, no accurate methods have ever been reported. A new knowledge based multistage method to automatically delineate the LV boundary at end diastole (ED) and end systole (ES) is discussed in this paper. It has a mean absolute boundary error or about 2 mm and an associated ejection fraction error of about 6%. The method makes extensive use of knowledge about LV shape and movement. The processing includes a multiimage pixel region classification, shape regression, and rejection classification. The method was trained and cross-validated tested on a database of 375 studies whose ED and ES boundary had been manually traced as the ground truth. The cross-validated results presented in this paper show that the accuracy is close to and slightly above the interobserver variability.
Collapse
Affiliation(s)
- L Sui
- Ultrasound Group, Siemens Medical System, Issaquah, WA 98029, USA
| | | | | |
Collapse
|
47
|
Tamura N, Dong Y, Sui L, Tai Y, Sugimoto K, Nagahata S, Tokuda M. Cyclin-dependent kinase inhibitor p27 is related to cell proliferation and prognosis in laryngeal squamous cell carcinomas. J Laryngol Otol 2001; 115:400-6. [PMID: 11410133 DOI: 10.1258/0022215011907749] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
An immunohistochemical study of both p27 and proliferating cell nuclear antigen (PCNA) was performed on 102 cases of laryngeal squamous cell carcinomas (LSCCs), and large variations in p27 expression were found among the tumours. Reduced expression of p27 was revealed in 54 (52.9 per cent) cases and correlated with tumour size, lymph node metastasis, and clinical stage, but did not correlate with age, sex, tumour site, or tumour grade. A significant positive correlation was found between the percentage of loss of p27 expression and the PCNA index (r = 0.844, p < 0.0001). Reduced expression of p27 was significantly correlated with both reducing disease-free and overall survival by univariate analysis. By multivariate analysis, reduced expression of p27, tumour grade, tumour size, lymph node metastasis as well as clinical stage were independent prognostic factors for overall survival of LSCCs. These findings indicate that reduced expression of p27 may be correlated with the malignant biological behaviour of LSCCs.
Collapse
Affiliation(s)
- N Tamura
- Department of Oral and Maxillofacial Surgery, Kagawa Medical University, Kagawa, 761-0793, Japan
| | | | | | | | | | | | | |
Collapse
|
48
|
Miao G, Sui L, Wei R. Dissipative properties and scaling law for a layer of granular material on a vibrating plate. Phys Rev E Stat Nonlin Soft Matter Phys 2001; 63:031304. [PMID: 11308646 DOI: 10.1103/physreve.63.031304] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2000] [Indexed: 05/23/2023]
Abstract
The dissipative properties and scaling law for a layer of vertically vibrated granular materials were investigated by means of a dynamical model of a single sphere colliding completely inelastically with a massive, oscillating plate. A relationship is presented of how the temperature of the layer scales with the acceleration of the plate and the restitution coefficient of the grains. The numerical calculation shows the existence of an "energy well" and a "temperature well," which could be used to explain the existence of a f/2 flat (where f is the external driving frequency) state in an experiment on vibrated granular material.
Collapse
Affiliation(s)
- G Miao
- State Key Laboratory of Modern Acoustics and Institute of Acoustics, Nanjing University, Nanjing 210093, Peoples Repubic of China
| | | | | |
Collapse
|
49
|
Dong Y, Sui L, Tai Y, Sugimoto K, Tokuda M. The overexpression of cyclin-dependent kinase (CDK) 2 in laryngeal squamous cell carcinomas. Anticancer Res 2001; 21:103-8. [PMID: 11299721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
We examined the expression of CDK2 using immunohistochemistry in 102 cases of laryngeal squamous cell carcinomas (LSCCs). The results showed that a total of 63.73% (65/102) patients revealed a CDK2 overexpression pattern and the CDK2 overexpression was correlated significantly with the tumor site, tumor size and advanced stage. A positive correlation between the CDK2 expression and proliferative activity of tumor cells measured by proliferating cell nuclear antigen was found (r = 0.894, p < 0.0001). The Kaplan-Meier's analysis showed that shorter disease-free survival was significantly associated with tumor grade, tumor size, lymph node metastasis and advanced stage. Overall survival was significantly associated with tumor grade, tumor size, lymph node metastasis, advanced stage and CDK2 overexpression. When CDK2 and PCNA were combined, the patients with both CDK2 overexpression and PCNA overexpression had a poorer overall survival. We concluded that the CDK2 overexpression may be associated with the malignant biological behavior of LSCCs.
Collapse
Affiliation(s)
- Y Dong
- Department of Physiology, Kagawa Medical University, 1750-1 Ikenobe, Miki-cho, Kita-Gun, Kagawa, 761-0793, Japan
| | | | | | | | | |
Collapse
|
50
|
Abstract
OBJECTIVES The aim of this study was to elucidate the expression and the correlation of two cell cycle regulators, cdk4 and its inhibitor p16, in a series of benign, borderline, and malignant ovarian tumors and to evaluate whether their alterations correlate with clinicopathologial parameters and patients' prognosis in epithelial ovarian carcinomas. METHODS Immunohistochemical analysis using anti-cdk4 and anti-p16 antibodies was carried out for 103 paraffin sections of ovarian tumors, and Western blot analysis and cdk4 activity assay were performed in 26 fresh ovarian tumor samples. RESULTS The results of immunohistochemistry showed that 60.61 and 69.70% of benign, 69.57 and 56.52% of borderline, and 74.47 and 40. 43% of malignant tumors expressed cdk4 and p16, respectively, demonstrating increased cdk4 and decreased p16 expression in ovarian carcinomas. A significant inverse relationship between cdk4 and p16 expression was found. The loss of p16 expression was more correlated with G(2) and G(3) tumors in contrast with G(1) tumors. No significant correlation was observed between cdk4 expression and clinicopathological parameters. Neither cdk4 nor p16 expression has significant effects on overall survival by the Kaplan-Meier method. When the combined phenotypes of the two proteins were analyzed, patients with cdk4-positive/p16-negative expression had a reduced overall survival than other phenotypes of cdk4/p16. CONCLUSIONS These data suggest that inverse expression of cdk4 and p16 may be involved in the development and progression of epithelial ovarian carcinomas. The combined phenotypes of cdk4 and p16 proteins could provide a useful prognostic indicator for patients with epithelial ovarian carcinoma.
Collapse
Affiliation(s)
- L Sui
- Department of Perinato-Gynecology, Kagawa Medical University, Kagawa, 761-0793, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|