1
|
Lian S, Mu Z, Yuan Z, Shafiq M, Mo X, Mu W. Methacrylated gelatin and platelet-rich plasma based hydrogels promote regeneration of critical-sized bone defects. Regen Biomater 2024; 11:rbae022. [PMID: 38567105 PMCID: PMC10985677 DOI: 10.1093/rb/rbae022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 01/27/2024] [Accepted: 02/12/2024] [Indexed: 04/04/2024] Open
Abstract
Physiological repair of large-sized bone defects requires instructive scaffolds with appropriate mechanical properties, biocompatibility, biodegradability, vasculogenic ability and osteo-inductivity. The objective of this study was to fabricate in situ injectable hydrogels using platelet-rich plasma (PRP)-loaded gelatin methacrylate (GM) and employ them for the regeneration of large-sized bone defects. We performed various biological assays as well as assessed the mechanical properties of GM@PRP hydrogels alongside evaluating the release kinetics of growth factors (GFs) from hydrogels. The GM@PRP hydrogels manifested sufficient mechanical properties to support the filling of the tissue defects. For biofunction assay, the GM@PRP hydrogels significantly improved cell migration and angiogenesis. Especially, transcriptome RNA sequencing of human umbilical vein endothelial cells and bone marrow-derived stem cells were performed to delineate vascularization and biomineralization abilities of GM@PRP hydrogels. The GM@PRP hydrogels were subcutaneously implanted in rats for up to 4 weeks for preliminary biocompatibility followed by their transplantation into a tibial defect model for up to 8 weeks in rats. Tibial defects treated with GM@PRP hydrogels manifested significant bone regeneration as well as angiogenesis, biomineralization, and collagen deposition. Based on the biocompatibility and biological function of GM@PRP hydrogels, a new strategy is provided for the regenerative repair of large-size bone defects.
Collapse
Affiliation(s)
- Shichao Lian
- Department of Traumatic Orthopaedics, Shandong Provincial Hospital, Shandong University, Jinan, Shandong 250012, China
- Zoucheng People’s Hospital, Zoucheng, Shandong 273500, China
| | - Zhiyu Mu
- Department of Medical Physics and Biomedical Engineering, University of London, London WC1E 6BT, UK
| | - Zhengchao Yuan
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, College of Biological Science and Medical Engineering, Donghua University, Shanghai 201620, PR China
| | - Muhammad Shafiq
- Innovation Center of NanoMedicine (iCONM), Kawasaki Institute of Industrial Promotion, Kawasaki-Ku, Kawasaki 210-0821, Japan
| | - Xiumei Mo
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, College of Biological Science and Medical Engineering, Donghua University, Shanghai 201620, PR China
| | - Weidong Mu
- Department of Traumatic Orthopaedics, Shandong Provincial Hospital, Shandong University, Jinan, Shandong 250012, China
| |
Collapse
|
2
|
Hu X, Han C, Zhang M, Mu Z, Fu Z, Ren J, Qiao K, Jia J, Yu J, Yuan S, Wei Y. Predicting Radiation Esophagitis using 18F-FAPI-04 PET/CT in Patients with LA-ESCC Treated with Concurrent Chemoradiotherapy. Int J Radiat Oncol Biol Phys 2023; 117:e303-e304. [PMID: 37785107 DOI: 10.1016/j.ijrobp.2023.06.2323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) This prospective study examined whether 18F-FAPI-04 PET/CT can predict the development and severity of radiation esophagitis (RE) in patients with locally advanced esophageal squamous cell carcinoma (LA-ESCC) treated with concurrent chemoradiotherapy. MATERIALS/METHODS From June 2021 to March 2022, images were prospectively collected from LA-ESCC patients who underwent 18F-FAPI-04 PET/CT examinations before and during radiotherapy. The development of RE was evaluated weekly according to Radiation Therapy Oncology Group criterion. The target-to-background ratio in blood (TBRblood) was analyzed at each time point and correlated with the onset and severity of RE. Factors that predicted RE were identified by multivariate logistic analyses. RESULTS Thirty patients (median age, 66.5 years [interquartile range: 56¨C71 years]; 22 men) were evaluated. Significantly higher TBRblood (during radiotherapy, mean: 3.06 vs 7.11, P = 0.003) and change in TBRblood compared with pre-RT (ΔTBRblood, mean: 0.67 vs 4.81, P = 0.002) were observed in patients with RE than patients without RE. Those with grade 3 RE had a significantly higher TBRblood (during radiotherapy, mean: 4.55 vs 9.66, P = 0.003) and ΔTBRblood (mean: 2.16 vs 7.50, P = 0.003) compared with those with RE CONCLUSION The ΔTBRblood on 18F-FAPI-04 PET/CT may be effective at identifying patients at risk for the development of RE, especially grade 3 RE.
Collapse
Affiliation(s)
- X Hu
- Department of Radiology, Shandong Cancer Hospital and Institute, Shandong First Medical University, Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - C Han
- Department of Surgery II, Breast Cancer Center, Shandong Cancer Hospital and Institute, Jinan, Shandong, China
| | - M Zhang
- 1.Department of Radiology, Shandong Cancer Hospital and Institute, Shandong First Medical University, Shandong Academy of Medical Sciences, Jinan, Shandong, China. 2.Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Z Mu
- Department of Pathology, Shandong Cancer Hospital and Institute, Shandong First Medical University, Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Z Fu
- Shandong Cancer Hospital and Institute, Jinan, China
| | - J Ren
- Department of PET/CT Center, Shandong Cancer Hospital and Institute, Shandong First Medical University, Shandong Academy of Medical Sciences, Jinan, China
| | - K Qiao
- Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - J Jia
- Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China 2. Department of Radiology, Shandong Cancer Hospital and Institute, Shandong First Medical University, Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - J Yu
- Shandong Cancer Hospital, Shandong University, Jinan, Shandong, China
| | - S Yuan
- Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Y Wei
- Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| |
Collapse
|
3
|
Clua-Provost T, Durand A, Mu Z, Rastoin T, Fraunié J, Janzen E, Schutte H, Edgar JH, Seine G, Claverie A, Marie X, Robert C, Gil B, Cassabois G, Jacques V. Isotopic Control of the Boron-Vacancy Spin Defect in Hexagonal Boron Nitride. Phys Rev Lett 2023; 131:126901. [PMID: 37802939 DOI: 10.1103/physrevlett.131.126901] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 08/26/2023] [Indexed: 10/08/2023]
Abstract
We report on electron spin resonance (ESR) spectroscopy of boron-vacancy (V_{B}^{-}) centers hosted in isotopically engineered hexagonal boron nitride (hBN) crystals. We first show that isotopic purification of hBN with ^{15}N yields a simplified and well-resolved hyperfine structure of V_{B}^{-} centers, while purification with ^{10}B leads to narrower ESR linewidths. These results establish isotopically purified h^{10}B^{15}N crystals as the optimal host material for future use of V_{B}^{-} spin defects in quantum technologies. Capitalizing on these findings, we then demonstrate optically induced polarization of ^{15}N nuclei in h^{10}B^{15}N, whose mechanism relies on electron-nuclear spin mixing in the V_{B}^{-} ground state. This work opens up new prospects for future developments of spin-based quantum sensors and simulators on a two-dimensional material platform.
Collapse
Affiliation(s)
- T Clua-Provost
- Laboratoire Charles Coulomb, Université de Montpellier and CNRS, 34095 Montpellier, France
| | - A Durand
- Laboratoire Charles Coulomb, Université de Montpellier and CNRS, 34095 Montpellier, France
| | - Z Mu
- Laboratoire Charles Coulomb, Université de Montpellier and CNRS, 34095 Montpellier, France
| | - T Rastoin
- Laboratoire Charles Coulomb, Université de Montpellier and CNRS, 34095 Montpellier, France
| | - J Fraunié
- Université de Toulouse, INSA-CNRS-UPS, LPCNO, 135 Avenue Rangueil, 31077 Toulouse, France
| | - E Janzen
- Tim Taylor Department of Chemical Engineering, Kansas State University, Manhattan, Kansas 66506, USA
| | - H Schutte
- Tim Taylor Department of Chemical Engineering, Kansas State University, Manhattan, Kansas 66506, USA
| | - J H Edgar
- Tim Taylor Department of Chemical Engineering, Kansas State University, Manhattan, Kansas 66506, USA
| | - G Seine
- CEMES-CNRS and Université de Toulouse, 29 rue J. Marvig, 31055 Toulouse, France
| | - A Claverie
- CEMES-CNRS and Université de Toulouse, 29 rue J. Marvig, 31055 Toulouse, France
| | - X Marie
- Université de Toulouse, INSA-CNRS-UPS, LPCNO, 135 Avenue Rangueil, 31077 Toulouse, France
| | - C Robert
- Université de Toulouse, INSA-CNRS-UPS, LPCNO, 135 Avenue Rangueil, 31077 Toulouse, France
| | - B Gil
- Laboratoire Charles Coulomb, Université de Montpellier and CNRS, 34095 Montpellier, France
| | - G Cassabois
- Laboratoire Charles Coulomb, Université de Montpellier and CNRS, 34095 Montpellier, France
| | - V Jacques
- Laboratoire Charles Coulomb, Université de Montpellier and CNRS, 34095 Montpellier, France
| |
Collapse
|
4
|
Wang R, Mu Z, Cheung F, Li X, Chan N, Chan J, Wing Y, Li S. Associations between Sleep-related Characteristics and NEO-Five Personality Traits: A systematic review and meta-analysis. Sleep Med 2022. [DOI: 10.1016/j.sleep.2022.05.194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
5
|
Fu J, Mu Z, Sun L, Gao X, Hu X, Xiu S. Chinese patients with type 2 diabetes mellitus and nonalcoholic fatty liver disease have lower serum osteocalcin levels compared to individuals with type 2 diabetes mellitus and no liver disease: a single-center cross-sectional study. J Endocrinol Invest 2022; 45:2275-2282. [PMID: 35829988 DOI: 10.1007/s40618-022-01861-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 07/03/2022] [Indexed: 02/07/2023]
Abstract
PURPOSE Osteocalcin may benefit nonalcoholic fatty liver disease (NAFLD). The present study aimed to explore the levels of serum osteocalcin in NAFLD in patients with type 2 diabetes mellitus (T2DM). METHODS In total, 1026 inpatients diagnosed with T2DM were enrolled in the study. NAFLD was defined according to the working definition of the revised guidelines for the management of NAFLD published by the Chinese Liver Disease Association, and confirmed by abdominal ultrasonography. RESULTS The current study found a NAFLD prevalence of 54% in the T2DM population. Subjects with NAFLD had lower concentrations of osteocalcin (8.28-13.99 ng/mL vs. 8.80-16.25 ng/mL, P = 0.001) but similar vitamin D, parathyroid hormone, beta-C-terminal telopeptide of type I collagen and procollagen type 1 N-peptide levels. Osteocalcin levels (OR: 0.956; 95% CI 0.926-0.987) were significantly associated with NAFLD. When all significant clinical indicators were analyzed together, increased BMI (OR: 1.120; 95% CI 1.065-1.178), fasting C-peptide (OR: 1.270; 95% CI 1.089-1.481) and triglycerides (OR: 1.661; 95% CI 1.284-2.148) were associated with a greater risk of NAFLD, while older age (OR: 0.967; 95% CI 0.948-0.986) and high osteocalcin levels (OR: 0.935; 95% CI 0.902-0.969) were related with a decreased risk of NAFLD. For every additional unit of osteocalcin, the patients received 7% deduced odds of NAFLD. CONCLUSION Low osteocalcin levels were associated with an increased risk for NAFLD in patients with T2DM.
Collapse
Affiliation(s)
- J Fu
- Department of Endocrinology, Beijing Institute of Geriatrics, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - Z Mu
- Department of Endocrinology, Beijing Institute of Geriatrics, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - L Sun
- Department of Endocrinology, Beijing Institute of Geriatrics, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - X Gao
- Department of Endocrinology, Beijing Institute of Geriatrics, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - X Hu
- Department of Endocrinology, Beijing Institute of Geriatrics, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - S Xiu
- Department of Endocrinology, Beijing Institute of Geriatrics, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China.
| |
Collapse
|
6
|
Wu Z, Qiu J, Mu Z, Qiu J, Lu W, Li Z, Jiang W, Shi L. Multiparameter MR-Based Radiomics For The Classification Of Breast Cancer Molecular Subtypes. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
7
|
Sun Z, Mu Z, Qiu J, Lu W, Qiu J, Jiang W, Shi L. The Influence Of Image Pre-Processing On The Prediction Of Radiation Pneumonitis Using CT-Based Radiomics. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
8
|
Guo Y, Zhang H, Liu Q, Wei F, Tang J, Li P, Han X, Zou X, Xu G, Xu Z, Zong W, Ran Q, Xiao F, Mu Z, Mao X, Ran N, Cheng R, Li M, Li C, Luo Y, Meng C, Zhang X, Xu H, Li J, Tang P, Xiang J, Shen C, Niu H, Li H, Shen J, Ni C, Zhang J, Wang H, Ma L, Bieber T, Yao Z. Phenotypic analysis of atopic dermatitis in children aged 1-12 months: elaboration of novel diagnostic criteria for infants in China and estimation of prevalence. J Eur Acad Dermatol Venereol 2019; 33:1569-1576. [PMID: 30989708 DOI: 10.1111/jdv.15618] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Accepted: 03/01/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND Atopic dermatitis (AD) is the most common skin disorder in infancy. However, the diagnosis and definite significance of infantile AD remains a debated issue. OBJECTIVE To analyse the phenotypes of AD in infancy, to establish diagnostic criteria and to estimate the prevalence of this condition in China. METHODS This is a multicentric study, in which 12 locations were chosen from different metropolitan areas of China. Following careful and complete history-taking and skin examination, the definite diagnosis of AD was made and the severity based on the SCORAD index was determined by local experienced dermatologists. Based on the detailed phenotyping, the major and representative clinical features of infantile AD were selected to establish the diagnostic criteria and evaluate their diagnostic efficacy. RESULTS A total of 5967 infants were included in this study. The overall point prevalence of AD was 30.48%. The infantile AD developed as early as at the second month of life, and its incidence peaked in the third month of life at 40.81%. The proportion of mild, moderate and severe AD was 67.40%, 30.57% and 2.03%, respectively. The most commonly seen manifestations in the infantile AD were facial dermatitis (72.07%), xerosis (42.72%) and scalp dermatitis (27.93%). We established the novel diagnostic criteria of infants, which included: (i) onset after 2 weeks of birth; (ii) pruritus and/or irritability and sleeplessness comparable with lesions; and (iii) all two items above with one of the following items can reach a diagnosis of AD: (i) eczematous lesions distributed on cheeks and/or scalp and/or extensor limbs, and (ii) eczematous lesions on any other parts of body accompanied by xerosis. CONCLUSIONS In China, the prevalence of AD in infancy is 30.48% according to clinical diagnosis of dermatologists. The novel Chinese diagnostic criteria for AD in infants show a higher sensitivity and comparable specificity.
Collapse
Affiliation(s)
- Y Guo
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Institute of Dermatology, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - H Zhang
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Institute of Dermatology, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Q Liu
- Department of Dermatology, Shanxi Children's Hospital, Taiyuan, Shanxi, China
| | - F Wei
- Department of Dermatology, Dalian Children's Hospital, Dalian, Liaoning, China
| | - J Tang
- Department of Dermatology, Hunan Children's Hospital, Changsha, Hunan, China
| | - P Li
- Department of Dermatology, Shenzhen Children's Hospital, Shenzhen, Guangdong, China
| | - X Han
- Department of Dermatology, Shengjing Hospital, China Medical University, Shenyang, Liaoning, China
| | - X Zou
- Department of Dermatology, Hubei Maternity and Child Health Hospital, Wuhan, Hubei, China
| | - G Xu
- Department of Community Health and Family Medicine, School of Public Health, Shanghai Jiaotong University, Shanghai, China
| | - Z Xu
- Department of Dermatology, Beijing Children's Hospital, Capital Medical University, Beijing, China
| | - W Zong
- Institute of Dermatology, Chinese Academy of Medical Sciences, Peking Union Medical College, Nanjing, Jiangsu, China
| | - Q Ran
- Department of Dermatology, Chengdu Women's and Children's Central Hospital, Chengdu, Sichuan, China
| | - F Xiao
- Institute of Dermatology and Department of Dermatology, No.1 Hospital, Anhui Medical University, Hefei, Anhui, China
| | - Z Mu
- Department of Dermatology, Shengjing Hospital, China Medical University, Shenyang, Liaoning, China
| | - X Mao
- Department of Dermatology, University of Pennsylvania, Philadelphia, PA, USA
| | - N Ran
- Department of Dermatology, University of Pennsylvania, Philadelphia, PA, USA
| | - R Cheng
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Institute of Dermatology, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - M Li
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Institute of Dermatology, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - C Li
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Institute of Dermatology, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Y Luo
- Department of Dermatology, Hunan Children's Hospital, Changsha, Hunan, China
| | - C Meng
- Department of Dermatology, Hubei Maternity and Child Health Hospital, Wuhan, Hubei, China
| | - X Zhang
- Department of Dermatology, Shanxi Children's Hospital, Taiyuan, Shanxi, China
| | - H Xu
- Department of Dermatology, Chengdu Women's and Children's Central Hospital, Chengdu, Sichuan, China
| | - J Li
- Department of Dermatology, Shenzhen Children's Hospital, Shenzhen, Guangdong, China
| | - P Tang
- Department of Dermatology, Shenzhen Children's Hospital, Shenzhen, Guangdong, China
| | - J Xiang
- Department of Pediatric Dermatology, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - C Shen
- Department of Dermatology, Beijing Children's Hospital, Capital Medical University, Beijing, China
| | - H Niu
- Department of Dermatology, Dalian Children's Hospital, Dalian, Liaoning, China
| | - H Li
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Institute of Dermatology, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - J Shen
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Institute of Dermatology, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - C Ni
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Institute of Dermatology, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - J Zhang
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Institute of Dermatology, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - H Wang
- Department of Pediatric Dermatology, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - L Ma
- Department of Dermatology, Beijing Children's Hospital, Capital Medical University, Beijing, China
| | - T Bieber
- Department of Dermatology and Allergy, University of Bonn, Bonn, Germany
| | - Z Yao
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,Institute of Dermatology, Shanghai Jiaotong University School of Medicine, Shanghai, China
| |
Collapse
|
9
|
Wu D, Liu J, Mu Z, Liu L, Li K, Jiang R, Chen P, Zhou Q, Jin M, Ma Y, Xie Y, Xiang J, Zhang T, Li B, Yu B. P1.01-96 Concurrent ALK/EGFR Alterations in Chinese Lung Cancers: Frequency, Clinical Features, and Differential Response to Therapy. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.652] [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: 11/25/2022]
|
10
|
Peng F, Mu Z, He C, Xue C, Li W, Wang Q, Chen Z, Zhang J. Patch testing in facial dermatitis using Chinese Baseline Series (60 allergens) and Cosmetic Series (58 allergens). J Eur Acad Dermatol Venereol 2018; 32:e288-e289. [PMID: 29377297 DOI: 10.1111/jdv.14822] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- F Peng
- Dermatology, Peking University People's Hospital, Xizhimennan Avenue, Xicheng District, Beijing, 100044, China
| | - Z Mu
- Dermatology, Peking University People's Hospital, Xizhimennan Avenue, Xicheng District, Beijing, 100044, China
| | - C He
- Beijing Key Laboratory of Plant Resources Research and Development, Beijing Technology and Business University, Beijing, 100012, China
| | - C Xue
- Dermatology, Peking University People's Hospital, Xizhimennan Avenue, Xicheng District, Beijing, 100044, China
| | - W Li
- Dermatology, Peking University People's Hospital, Xizhimennan Avenue, Xicheng District, Beijing, 100044, China
| | - Q Wang
- Beijing Key Laboratory of Plant Resources Research and Development, Beijing Technology and Business University, Beijing, 100012, China
| | - Z Chen
- Dermatology, Peking University People's Hospital, Xizhimennan Avenue, Xicheng District, Beijing, 100044, China
| | - J Zhang
- Dermatology, Peking University People's Hospital, Xizhimennan Avenue, Xicheng District, Beijing, 100044, China
| |
Collapse
|
11
|
Xinqiang S, Mu Z, Lei C, Mun LY. Bioinformatics Analysis on Molecular Mechanism of Green Tea Compound Epigallocatechin-3-Gallate Against Ovarian Cancer. Clin Transl Sci 2017; 10:302-307. [PMID: 28504421 PMCID: PMC5504484 DOI: 10.1111/cts.12470] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [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: 02/21/2017] [Accepted: 04/03/2017] [Indexed: 01/01/2023] Open
Abstract
Epigallocatechin‐3‐gallate (EGCG) is the most abundant and biologically active catechin in green tea, and it exerts multiple effects in humans through mechanisms that remain to be clarified. The present study used bioinformatics to identify possible mechanisms by which EGCG reduces the risk of ovarian cancer. Possible human protein targets of EGCG were identified in the PubChem database, possible human gene targets were identified in the National Center for Biotechnology Information database, and then both sets of targets were analyzed using Ingenuity Pathway Analysis (IPA). The results suggest that signaling proteins affected by EGCG in ovarian cancer, which include JUN, FADD, NFKB1, Bcl‐2, HIF1α, and MMP, are involved primarily in cell cycle, cellular assembly and organization, DNA replication, etc. These results identify several specific proteins and pathways that may be affected by EGCG in ovarian cancer, and they illustrate the power of integrative informatics and chemical fragment analysis for focusing mechanistic studies.
Collapse
Affiliation(s)
- S Xinqiang
- Department of Biological Sciences, Xinyang Normal University, Xinyang, 464000.,Department of Biological Sciences, National University of Singapore, Singapore, 1175432
| | - Z Mu
- Hospital Attached to Xinyang Normal University, Xinyang, 464000
| | - C Lei
- Department of Biological Sciences, Xinyang Normal University, Xinyang, 464000
| | - L Y Mun
- Department of Biological Sciences, National University of Singapore, Singapore, 1175432
| |
Collapse
|
12
|
Mu Z, Wang C, Ye Z, Rossi G, Austin L, Yang H, Cristofanilli M. Abstract P1-01-05: Prognostic values of circulating tumor cells (CTC) and cancer associated macrophage-like cells (CAML) enumerations in metastatic breast cancer: The role for innate immunity in the metastatic process. Cancer Res 2017. [DOI: 10.1158/1538-7445.sabcs16-p1-01-05] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: The enumeration of circulating tumor cells (CTCs) using the CellSearch assay is a well-established prognostic and predictive marker for metastatic breast cancer (MBC). However, additional prognostic markers are lacking in patients with ≥ 5 CTCs in 7.5 ml of blood. Tumor-associated macrophages (TAMs) are derived from circulating monocytes or tissue-resident macrophages. TAMs have a controversial role in metastasis and anti-tumor processes. Recent studies showed that circulating cancer associated macrophage-like cells (CAMLs) are specialized phagocytic myeloid cells and found in the peripheral blood of patients with solid tumors including breast cancer, but not in healthy individuals. The presence of CAMLs may indicate the activation of innate immunity in cancer patients. The function and prognostic value of CAMLs in MBC is unknown. In the current study, we measured CTCs and CAMLs on the CellSearch™ platform and investigated their prognostic values in MBC.
Methods: Peripheral blood samples from 127 stages IV breast cancer patients were collected at baseline before starting first-line therapy. The detection and enumeration of CTCs and CAMLs in 7.5 ml blood sample were performed on the CellSearch™ system. CTCs were identified by cytokeratins (CK-8, 18, and 19) positive and CD45 negative staining. CAMLs were defined by positive staining for cytokeratins and CD45 (Adams et al, PNAS, 111(9):3514-9, 2014). CTCs and CAMLs enumeration in associations with the progression-free survival (PFS) and overall survival (OS) of patients were evaluated using Kaplan Meier curves and Cox proportional hazards modeling.
Results: The image review of CAMLs by using CellSearch analysis showed heterogeneous morphological phenotypes. CAMLs are large cells presenting enlarged nuclei or multiple individual nuclei, and both cytokeratin and CD45 positive with diffused cytoplasmic staining. Among the 127 MBC patients, 38 (29.9%) had elevated CTCs (≥5 CTCs), and 21 (16.5%) had at least one CAML detected. Patients with CAMLs had a significantly increased PFS (p=0.0374) and OS (p=0.0042), compared to patients without CAMLs at baseline. Patients with elevated baseline CTCs and CAMLs had worse PFS with a hazard ratio (HR) of 4.04 (95% CI 2.16 -7.56, P<0.0001), compared to patients with < 5 CTCs and without CAMLs. The combined analysis of baseline CTCs enumeration and CAMLs showed similar effect on patient OS. Compared to patients with < 5 CTCs and without CAMLs, patients with < 5 CTCs and with CAMLs, patients with ≥ 5 CTCs and without CAMLs, and patients with ≥ 5 CTCs and with CAMLs, had an increasing trend of death risk, with an HR of 2.66 (95% CI 0.53-13.21), 6.14 (2.10-17.92), and 9.13 (3.05-27.37), respectively (p for trend<0.0001).
Conclusion: Baseline enumerations of both individual CTCs and CAMLs are feasible and increase our ability to accurately predict outcome in MBC patients. Evaluation of CAMLs in peripheral blood may be a marker of innate immunity and provide additional prognostic values for MBC.
Citation Format: Mu Z, Wang C, Ye Z, Rossi G, Austin L, Yang H, Cristofanilli M. Prognostic values of circulating tumor cells (CTC) and cancer associated macrophage-like cells (CAML) enumerations in metastatic breast cancer: The role for innate immunity in the metastatic process [abstract]. In: Proceedings of the 2016 San Antonio Breast Cancer Symposium; 2016 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2017;77(4 Suppl):Abstract nr P1-01-05.
Collapse
Affiliation(s)
- Z Mu
- Robert H Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL; Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; U.O.C. Oncologia Medica 1 - Istituto Oncologico Veneto - IRCCS IOV, Padova, PD, Italy
| | - C Wang
- Robert H Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL; Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; U.O.C. Oncologia Medica 1 - Istituto Oncologico Veneto - IRCCS IOV, Padova, PD, Italy
| | - Z Ye
- Robert H Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL; Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; U.O.C. Oncologia Medica 1 - Istituto Oncologico Veneto - IRCCS IOV, Padova, PD, Italy
| | - G Rossi
- Robert H Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL; Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; U.O.C. Oncologia Medica 1 - Istituto Oncologico Veneto - IRCCS IOV, Padova, PD, Italy
| | - L Austin
- Robert H Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL; Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; U.O.C. Oncologia Medica 1 - Istituto Oncologico Veneto - IRCCS IOV, Padova, PD, Italy
| | - H Yang
- Robert H Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL; Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; U.O.C. Oncologia Medica 1 - Istituto Oncologico Veneto - IRCCS IOV, Padova, PD, Italy
| | - M Cristofanilli
- Robert H Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University, Chicago, IL; Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; U.O.C. Oncologia Medica 1 - Istituto Oncologico Veneto - IRCCS IOV, Padova, PD, Italy
| |
Collapse
|
13
|
Li YJ, Li N, Mu Z, Ma BY, Jiang F, Chen J. [The study of atmospheric particulate matters and IFN-γDNA methylation in CD4⁺ T cells from patients with AR children]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 30:523-529. [PMID: 29871060 DOI: 10.13201/j.issn.1001-1781.2016.07.004] [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] [Received: 12/10/2015] [Indexed: 11/12/2022]
Abstract
Objective:To investigate the possible effects of meteorological and environmental factors on AR of children and IFN-γgene specific DNA methylation levels in CD4⁺ T cells of patients with AR. Method:Undergoing follow-up on 35 pediatric AR patients (6-12 years). Data on daily sulfur dioxide (SO₂), nitrogen dioxide (NO₂), particulate matter of diameter smaller than 10 micrometer (PM-10) and particulate matter of diameter smaller than 2.5 micrometer (PM2.5), the average of ozone (O₃) per 8 hours was available as average values derived from the data of 6 state controlled monitoring stations distributed across Pudong district, Shanghai. We quantified IFN-γ (interferon-γ) gene specific DNA methylation levels in CD4⁺ T cells from 35 patients with AR and 30 healthy controls. mRNA levels of IFN-γ gene were measured by real-time reverse transcriptase-PCR. Methods of personal exposure assessment of PM2.5 and PM10 were measured. Result:Compared with control, IFN-γ promoter region was hypermethylated in AR CD4⁺ T cells (P<0.05). Of all observed CpG sites in IFN-γ promoter region, there were significant differences in CpG⁻²⁹⁹, CpG⁺¹¹⁹, CpG⁺¹⁶⁸ (P=0.004, P=0.029, P=0.035). IFN-γ mRNA expression was significantly increase in CD4⁺ T cells (P<0.05). The level of IFN-γ mRNA expression was negatively correlated to mean level of methylation in IFN-γ promoter region. After adjusting, level of long exposure PM2.5 was positively correlated with level of methylation in IFN-γ promoter region. Conclusion:Level of methylation in IFN-γ promoter region may be affected by long exposure PM2.5.
Collapse
Affiliation(s)
- Y J Li
- Department of Otorhinolaryngology, Shanghai Children's Medical Center Affiliated with Shanghai Jiaotong University School of Medicine, Shanghai, 200127, China
| | - N Li
- Institute of Pediatric Translational Medicine, Shanghai Children's Medical Center, Shanghai Jiaotong University School of Medicine
| | - Z Mu
- Shanghai Meteorological Bureau
| | - B Y Ma
- Institute of Pediatric Translational Medicine, Shanghai Children's Medical Center, Shanghai Jiaotong University School of Medicine
| | - F Jiang
- Department of Developmental and Behavioral Pediatrics, Shanghai Children's Medical Center Affiliated with Shanghai Jiaotong University School of Medicine, MOE-Shanghai Key Laboratory of Children's Environmental Health
| | - J Chen
- Department of Otorhinolaryngology, Shanghai Children's Medical Center Affiliated with Shanghai Jiaotong University School of Medicine, Shanghai, 200127, China
| |
Collapse
|
14
|
Ye Z, Li B, Wang C, Zhong X, Wei Q, Mu Z, Austin L, Jaslow R, Avery T, Palazzo J, Biederman L, Yang H, Cristofanilli M. Abstract P6-18-01: Novel genetic susceptibility loci for inflammatory breast cancer identified by whole exome sequencing. Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-p6-18-01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Inflammatory breast cancer (IBC) is an extremely aggressive form of locally advanced breast cancer that affects approximately 5% of breast cancer patients. The prognosis of IBC patients is remarkably poor, with a three-year survival rate of approximately 30% compared to 60% for non-IBC breast cancer patients. The etiology of IBC is largely unknown. A few risk factors have been reported such as body mass index (BMI) and educational level. Prior evidence has also implicated genetic components in IBC etiology. For instance, the reported familial cases and racial incidence disparity of IBC patients, as well as the fact IBC patients typically have a younger age onset than non-IBC patients, all indicated the possible involvement of genetic factors. Nevertheless, as yet no genetic epidemiological study has been reported to evaluate IBC genetic predisposition.
Methods: To test the hypothesis that genetic variants and mutations may affect IBC susceptibility, we performed whole exome sequencing in a pilot case-control study that contained 70 IBC cases and 119 unrelated cancer-free controls. Sequencing data were de-multiplexed, filtered, assessed for various quality control metrics, mapped to reference genome and annotated. Comprehensive single variant-based, gene-centered, and pathway-based analyses were conducted to identify variants, genes, and pathways that may be involved in IBC predisposition.
Results: We obtained > 50x on-target sequencing coverage of the whole exome in > 90% of the patients. In single variant analysis, we identified six variants reaching genome-wide significance. Four variants were encoded by genes that have been implicated in breast cancer development including MALAT1, MAP3K9, POLR3B, and FIP1L1. Two variants were encoded by novel genes that have not been related to breast cancer, including CCDC30 and LINC01565. Two types of analyses based on a gene-centered strategy identified top genes such as SLC39A4, CDHR1, AP5Z1, GNB3, ITGA10, etc. However, possibly due to the limited sample size, none of these genes reached genome-wide significance. Ingenuity Pathway Analysis (IPA), using the complete list of significant genes identified by each of these analyses all reported "cancer" as the highest possible disorder associated with these genes, demonstrating the biological plausibility of our findings. Moreover, canonical pathways such as IL4 signaling, glycogen degradation, epithelial adherence junction signaling, and CCR3 signaling in eosinophils were among the top pathways that were found involved in IBC predisposition.
Conclusion: Overall, we provided novel preliminary evidence that genetic variants are potentially associated with the risk of developing IBC. We are currently conducting validation studies with larger sample sizes are warranted to confirm these findings and identify additional genetic susceptibility loci.
Citation Format: Ye Z, Li B, Wang C, Zhong X, Wei Q, Mu Z, Austin L, Jaslow R, Avery T, Palazzo J, Biederman L, Yang H, Cristofanilli M, IBC Inflammatory Breast Cancer International Consortium. Novel genetic susceptibility loci for inflammatory breast cancer identified by whole exome sequencing. [abstract]. In: Proceedings of the Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2015 Dec 8-12; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2016;76(4 Suppl):Abstract nr P6-18-01.
Collapse
Affiliation(s)
- Z Ye
- Vanderbilt University, Vanderbilt, TN; Division of Population Science, Sidney Kimmel Cancer Center, Thomas Jefferson Univerisity, Philadelphia, PA; Division of Solid Tumor Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Only
| | - B Li
- Vanderbilt University, Vanderbilt, TN; Division of Population Science, Sidney Kimmel Cancer Center, Thomas Jefferson Univerisity, Philadelphia, PA; Division of Solid Tumor Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Only
| | - C Wang
- Vanderbilt University, Vanderbilt, TN; Division of Population Science, Sidney Kimmel Cancer Center, Thomas Jefferson Univerisity, Philadelphia, PA; Division of Solid Tumor Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Only
| | - X Zhong
- Vanderbilt University, Vanderbilt, TN; Division of Population Science, Sidney Kimmel Cancer Center, Thomas Jefferson Univerisity, Philadelphia, PA; Division of Solid Tumor Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Only
| | - Q Wei
- Vanderbilt University, Vanderbilt, TN; Division of Population Science, Sidney Kimmel Cancer Center, Thomas Jefferson Univerisity, Philadelphia, PA; Division of Solid Tumor Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Only
| | - Z Mu
- Vanderbilt University, Vanderbilt, TN; Division of Population Science, Sidney Kimmel Cancer Center, Thomas Jefferson Univerisity, Philadelphia, PA; Division of Solid Tumor Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Only
| | - L Austin
- Vanderbilt University, Vanderbilt, TN; Division of Population Science, Sidney Kimmel Cancer Center, Thomas Jefferson Univerisity, Philadelphia, PA; Division of Solid Tumor Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Only
| | - R Jaslow
- Vanderbilt University, Vanderbilt, TN; Division of Population Science, Sidney Kimmel Cancer Center, Thomas Jefferson Univerisity, Philadelphia, PA; Division of Solid Tumor Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Only
| | - T Avery
- Vanderbilt University, Vanderbilt, TN; Division of Population Science, Sidney Kimmel Cancer Center, Thomas Jefferson Univerisity, Philadelphia, PA; Division of Solid Tumor Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Only
| | - J Palazzo
- Vanderbilt University, Vanderbilt, TN; Division of Population Science, Sidney Kimmel Cancer Center, Thomas Jefferson Univerisity, Philadelphia, PA; Division of Solid Tumor Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Only
| | - L Biederman
- Vanderbilt University, Vanderbilt, TN; Division of Population Science, Sidney Kimmel Cancer Center, Thomas Jefferson Univerisity, Philadelphia, PA; Division of Solid Tumor Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Only
| | - H Yang
- Vanderbilt University, Vanderbilt, TN; Division of Population Science, Sidney Kimmel Cancer Center, Thomas Jefferson Univerisity, Philadelphia, PA; Division of Solid Tumor Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Only
| | - M Cristofanilli
- Vanderbilt University, Vanderbilt, TN; Division of Population Science, Sidney Kimmel Cancer Center, Thomas Jefferson Univerisity, Philadelphia, PA; Division of Solid Tumor Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Only
| | | |
Collapse
|
15
|
Ye Z, Mu Z, Wang C, Palazzo JP, Biederman L, Li B, Jaslow R, Avery T, Austin L, Yang H, Cristofanilli M. Abstract P2-08-09: Prognostic values of circulating tumor cell (CTC) enumeration and their clusters in advanced breast cancer. Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-p2-08-09] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background The enumeration of circulating tumor cells (CTCs) has been proven to have prognostic values in several solid tumors including breast cancer. It has been established that a cut-off of 5 CTCs in 7.5 ml of blood may significantly differentiate breast cancer patients with favorable and unfavorable survival. However, CTC enumeration has not been shown to further predict the prognosis in those patients with more than 5 CTCs in 7.5 ml of blood. There are several recent in vitro and in vivo studies suggesting that clusters of CTC can be identified in blood and those clusters may play an important role in tumor progression and metastasis. Few clinical studies have been reported to enumerate CTC clusters and evaluate their prognostic values. In the current study, we hypothesize that the enumeration of CTC clusters play an important role in the prognostication of advanced breast cancer patients by providing additional predictive performance independent of CTC enumeration.
Methods In an ongoing study of blood-based breast cancer biomarkers, we enrolled 114 patients with stages III and IV breast cancer. Among them, 68 patients had inflammatory breast cancer (IBC), an extremely aggressive form of breast cancer with a much lower survival rate than non-IBC breast cancer patients. The number of single CTCs and CTC clusters (two or more CTCs bound together) in 7.5 ml blood sample were counted using the CellSearch™ system (Janssen Diagnostic) at baseline study entry, and their associations with the progression-free survival (PFS) of patients were evaluated using Kaplan Meier curves and Cox proportional hazards modeling.
Results Baseline CTCs were detected in 67 (58.77%) patients. Thirty-five (30.70%) and 19 patients (16.67%) had elevated CTCs (≥5 CTCs/7.5 mL) and clusters, respectively. IBC patients had a slightly higher percentage of cluster (17.65%) compared to non-IBC patients (15.22%). Patients with elevated baseline CTC and cluster had worse PFS (log rank P, 0.0009 and 0.0035, respectively). Compared to patients with < 5 CTC and without cluster, those patients with elevated CTC without cluster, and those with elevated CTC with cluster had an increasingly higher risk of disease progression with an hazard ratio [HR] of 1.93 (95% confidence interval [CI] 1.01-3.67) and 2.91 (1.54-5.50), respectively (P for trend = 0.001). Moreover, the combined analysis of baseline CTC and cluster enumerations showed similar effect when the analysis was restricted to IBC patients (HR 3.03, 95% CI 1.34-6.86).
Conclusion Baseline enumerations of both individual CTCs and CTC clusters predict PFS in advanced stage breast cancer patients. CTC clusters provide further prognostic value in patients with elevated CTC and their molecular characterizations may provide novel insights into the metastasis process.
Citation Format: Ye Z, Mu Z, Wang C, Palazzo JP, Biederman L, Li B, Jaslow R, Avery T, Austin L, Yang H, Cristofanilli M. Prognostic values of circulating tumor cell (CTC) enumeration and their clusters in advanced breast cancer. [abstract]. In: Proceedings of the Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2015 Dec 8-12; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2016;76(4 Suppl):Abstract nr P2-08-09.
Collapse
Affiliation(s)
- Z Ye
- Division of Population Science, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Division of Solid Tumor Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Vanderbilt University, Nashville, TN
| | - Z Mu
- Division of Population Science, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Division of Solid Tumor Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Vanderbilt University, Nashville, TN
| | - C Wang
- Division of Population Science, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Division of Solid Tumor Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Vanderbilt University, Nashville, TN
| | - JP Palazzo
- Division of Population Science, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Division of Solid Tumor Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Vanderbilt University, Nashville, TN
| | - L Biederman
- Division of Population Science, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Division of Solid Tumor Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Vanderbilt University, Nashville, TN
| | - B Li
- Division of Population Science, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Division of Solid Tumor Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Vanderbilt University, Nashville, TN
| | - R Jaslow
- Division of Population Science, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Division of Solid Tumor Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Vanderbilt University, Nashville, TN
| | - T Avery
- Division of Population Science, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Division of Solid Tumor Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Vanderbilt University, Nashville, TN
| | - L Austin
- Division of Population Science, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Division of Solid Tumor Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Vanderbilt University, Nashville, TN
| | - H Yang
- Division of Population Science, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Division of Solid Tumor Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Vanderbilt University, Nashville, TN
| | - M Cristofanilli
- Division of Population Science, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Division of Solid Tumor Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; Vanderbilt University, Nashville, TN
| |
Collapse
|
16
|
Mu Z, Benali-Furet N, Uzan G, Ye Z, Austin L, Wang C, Nguyen1 T, Avery T, Jaslow R, Yang H, Cristofanilli M. Abstract P2-02-14: Detection and characterization of CTCs isolated by ScreenCell®-Filtration in metastatic breast cancer. Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-p2-02-14] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Circulating Tumor cells (CTCs) detection has prognostic and predictive implications in patients with metastatic breast cancer (MBC). Genomic and phenotypic analysis of CTCs hold enormous promise as blood-based molecular characterization and monitoring disease progression and treatment benefit with a strong potential to be translated into more individualized targeted treatments. FDA-approved CellSearch™ detection allows only enumeration of CTCs expressing EpCAM without molecular characterization. CTCs represent very heterogeneous populations of tumorigenic cancer cells and some subpopulations have undergone epithelial-Mesenchymal transition (EMT), which is associated metastasis process and an unfavourable outcome. EpCAM-based enrichment technique has failed to detect EMT subpopulations due to the decreased expression or loss of epithelial markers. Non-EpCAM-based approaches are needed for identifying EMT CTCs. The ScreenCell® devices are single-use and low-cost innovative devices that use a filter for enrichment-free isolation of CTCs by a two-steps combining size-based separation and staining using different markers. The DEPArray™ system is the ideal downstream isolation system to collect single or pooled CTCs for molecular and genetic analysis. In this study, we evaluated the feasibility of achieving CTCs detection/enumeration using ScreenCell® filtration followed by single cell isolation with the DEPArray™ in MBC patients.
Methods: The first part of the study consisted in evaluating CTCs detection/enumeration in 30 patients with stage III and stage IV breast cancer. 3 mL of whole blood in an EDTA or Transfix tubes was collected and processed on the ScreenCell® Cyto device following the instructions of the supplier. CTCs were stained with cytokeratin (CK-8, 18, and 19), leukocyte antigen (CD45), and a nuclear dye (DAPI) and counted under fluorescence microscope. CTCs were identified as positive staining for CK and DAPI and negative staining for CD45 (CK+/DAPI+CD45-). In the second part, After enrichment, CTCs were stained with CK, CD45, and DAPI and sorted with DEPArray™ Platform (Silicon Biosystems, Inc). Single CTCs were collected and the DNA of each single CTCs was amplified with Ampli1™ WGA kit, and the genome integrity index (GII) was assessed by Ampli1™ QC kit (Silicon Biosystems, Inc). Library was constructed and whole exome sequencing (WES) of DNA mutations was conducted.
Results: Twenty patient samples had CTCs detected (66.7%), the number of CTCs was 1 to 347 per 3.0 ml of whole blood. CTC-clusters were detected in 7 patient samples (23.3%). Single CTCs were collected on DEPArray™ platform after enrichment with ScreenCell filtration. GII was confirmed with the presence of short, medium, and long DNA fragments (3 to 4 PCR bands) in the WGA library by PCR-based assay. All collected CTCs showed high GII as measured by Ampli1™ QC kit (GII ≥ 3) for WES of DNA mutations. The data analysis of WES results is under processing.
Conclusions: ScreenCell® filtration is simple and effective devices to isolate CTCs and identify CTC-clusters. Isolation of single cells for molecular analysis using the combination of ScreenCell® filtration and DEPArray™ Platform is feasible for genetic characterization of CTCs.
Citation Format: Mu Z, Benali-Furet N, Uzan G, Ye Z, Austin L, Wang C, Nguyen1 T, Avery T, Jaslow R, Yang H, Cristofanilli M. Detection and characterization of CTCs isolated by ScreenCell®-Filtration in metastatic breast cancer. [abstract]. In: Proceedings of the Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2015 Dec 8-12; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2016;76(4 Suppl):Abstract nr P2-02-14.
Collapse
Affiliation(s)
- Z Mu
- Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; ScreenCell, Sarcelles, France
| | - N Benali-Furet
- Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; ScreenCell, Sarcelles, France
| | - G Uzan
- Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; ScreenCell, Sarcelles, France
| | - Z Ye
- Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; ScreenCell, Sarcelles, France
| | - L Austin
- Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; ScreenCell, Sarcelles, France
| | - C Wang
- Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; ScreenCell, Sarcelles, France
| | - T Nguyen1
- Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; ScreenCell, Sarcelles, France
| | - T Avery
- Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; ScreenCell, Sarcelles, France
| | - R Jaslow
- Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; ScreenCell, Sarcelles, France
| | - H Yang
- Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; ScreenCell, Sarcelles, France
| | - M Cristofanilli
- Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA; ScreenCell, Sarcelles, France
| |
Collapse
|
17
|
Paolillo C, Mu Z, Austin L, Nguyen T, Capoluongo E, Fortina P, Cristofanilli M. Abstract P2-02-11: Detection of activating estrogen receptor 1 (ESR1) mutation on single circulating tumor cells from metastatic breast cancer patients. Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-p2-02-11] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: 65% of primary breast cancers express the estrogen receptor α (ERα) and the mainstay of treatment are therapies that result in selective estrogen receptor modulation (SERM) of estrogen deprivation (aromatase inhibitors, AIs). Even thought endocrine therapy resulted in reduced recurrence and mortality, a significant portion of patients relapse with a metastatic disease and subsequently progress while of therapy for advanced disease (endocrine resistance). Recent evidence showed that activating hot spot mutation in the ligand binding domain of the ERα are acquired on treatment (frequency of 20%) and can drive resistance to endocrine therapy. Circulating tumor cells (CTCs) provide a non-invasive accessible source of tumor material and the molecular profiling of these rare cells might lead to insight on disease progression and therapeutic strategies. These features suggest that the detection of ESR1 mutation on single CTC may be a useful biomarker for therapy guidance.
Purpose: Investigate the incidence and heterogeneity of ESR1 mutational status within single CTCs isolated from individual metastatic breast cancer patients (mBCs), combining the FDA approved CellSearch® system for enumeration of CTCs with the DEPArrayTM technologies.
Methods: CTCs were enriched and enumerate by CellSearch® in 7.5 ml blood samples collected from 21 mBCs according to standard protocol. Each CTC-enriched sample with at least 20 CTCs was recovered from Veridex cartridge and loaded into the DEPArrayTM A300K chip, since the DEPArrayTM analyzed only the 66% of the sample volume loaded, according to the manufacturer's instructions. The chip scanning was performed by automated fluorescence microscope. The loaded cells were recovered as single cell and subdivided in tree different group: Cytokeratin (CK) positive ( Dapi+, CK+, ER-, CD45-); ER positive (Dapi+, ER+, CK+, CD45-); White Blood cells (WBCs) (Dapi+, CD45+, CK-, ER-). Single CTCs and WBCs were then submitted to whole genome amplification (WGA) using the Single Cell WGA kit (Yikon Genomics) according the manufacturer's instructions. Detection of target 14 ESR1 hot spot mutations was performed on ABI PRISM® 3700 genetic analyzer by target Sanger sequencing.
Results: 3 out of 21 mBCs with ≥20 CTCs were sorted and a total of 65 cells were recovered. WGA and ESR1 mutational status were performed on a total of 25 cells (respectively 11 ER+, 6 CK+ and 8 WBCs). In 1 of the 3 patients, that failed 2 lines of chemotherapy and previous single agent endocrine therapy, molecular heterogeneity was detected among its ER+ cells. 4 of 5 ER+ cells were heterozygote for the Y537S while one cell was homozygous, maybe due to a loss of heterozygosity. Y537S is one of the most common mutations that leads to a ligand independent ER transcriptional activity that does not respond to endocrine manipulation. No mutations were reported in all the CK+ and WBC cells analyzed.
Conclusions: This study demonstrates the feasibility of a non-invasive approach based on liquid biopsy in mBCs. Evaluation of ER status and early identification of ESR1 mutation in ER+ CTCs might allow to predict effect of the endocrine therapies and switching to other treatments before the emergence of metastatic disease.
Citation Format: Paolillo C, Mu Z, Austin L, Nguyen T, Capoluongo E, Fortina P, Cristofanilli M. Detection of activating estrogen receptor 1 (ESR1) mutation on single circulating tumor cells from metastatic breast cancer patients. [abstract]. In: Proceedings of the Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2015 Dec 8-12; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2016;76(4 Suppl):Abstract nr P2-02-11.
Collapse
Affiliation(s)
- C Paolillo
- Catholic University of the Sacred Heart of Rome, Rome, Italy; Thomas Jefferson University and Kimmel Cancer Center, Philadelphia, PA
| | - Z Mu
- Catholic University of the Sacred Heart of Rome, Rome, Italy; Thomas Jefferson University and Kimmel Cancer Center, Philadelphia, PA
| | - L Austin
- Catholic University of the Sacred Heart of Rome, Rome, Italy; Thomas Jefferson University and Kimmel Cancer Center, Philadelphia, PA
| | - T Nguyen
- Catholic University of the Sacred Heart of Rome, Rome, Italy; Thomas Jefferson University and Kimmel Cancer Center, Philadelphia, PA
| | - E Capoluongo
- Catholic University of the Sacred Heart of Rome, Rome, Italy; Thomas Jefferson University and Kimmel Cancer Center, Philadelphia, PA
| | - P Fortina
- Catholic University of the Sacred Heart of Rome, Rome, Italy; Thomas Jefferson University and Kimmel Cancer Center, Philadelphia, PA
| | - M Cristofanilli
- Catholic University of the Sacred Heart of Rome, Rome, Italy; Thomas Jefferson University and Kimmel Cancer Center, Philadelphia, PA
| |
Collapse
|
18
|
Page D, Yuan J, Dong Z, Ginsberg A, Wong P, Emerson R, Sung J, Comstock C, Mu Z, Solomon S, Diab A, Durack J, Maybody M, Erinjeri J, Brogi E, Morris E, Patil S, Robins H, Wolchok J, Hudis C, Norton L, Allison J, McArthur H. FEATURED ABSTRACT, Tumor and systemic immune responses to pre-operative cryoablation plus immune therapy with ipilimumab in early stage breast cancer. J Vasc Interv Radiol 2015. [DOI: 10.1016/j.jvir.2014.12.352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
|
19
|
Zhao Y, Wen G, Qiao Z, Xu H, Sun Q, Huang H, Shan S, Mu Z, Zhang J. Effects of tetra-arsenic tetra-sulfide on BXSB lupus-prone mice: a pilot study. Lupus 2014; 22:469-76. [PMID: 23554035 DOI: 10.1177/0961203313478302] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Systemic lupus erythematosus (SLE) is an autoimmune disease of uncertain etiology that affects multiple tissues and organs. Arsenic trioxide (ATO) has been used in lupus-prone mice with a regulatory effect on immune abnormality. Tetra-arsenic tetra-sulfide (As4S4), a traditional Chinese medicine, is effective on acute promyelocytic leukemia with mild side effects than ATO. In this study, a pilot study was performed to investigate the effects and the mechanism of As4S4 on the lupus-prone BXSB mice. Improvement of monocytosis (p<0.05) in spleen and decreased serum interleukin-6 (IL-6) (p=0.0277) were observed with As4S4 treatment. As4S4-treated mice exhibited amelioration of skin, liver and renal disease with mild side effects. Histological analysis revealed that As4S4 suppressed immune complex deposition, mesangial proliferation and inflammatory cell infiltration in kidney and liver. Our study support that As4S4 selectively suppresses cutaneous lupus and nephritis in BXSB mice and might be a potential treatment for SLE.
Collapse
Affiliation(s)
- Y Zhao
- Department of Dermatology, Peking University People's Hospital, China
| | | | | | | | | | | | | | | | | |
Collapse
|
20
|
Mu Z, Brown MV, Fernandez S, Robertson FM, Cristofanilli M. Abstract P3-01-05: Metabolomic analysis of breast cancer cell lines: Clues to the metabolic fingerprint of inflammatory breast cancer. Cancer Res 2013. [DOI: 10.1158/0008-5472.sabcs13-p3-01-05] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
BACKGROUND: Inflammatory breast cancer (IBC) is an aggressive type of advanced breast cancer with a poor prognosis and lower survival rate. IBC is characterized by peculiar clinical and biological features and resistance to standard treatments. IBC has shown the capacity to spread early through lymphatic channels and blood vessels causing the specific inflammatory signs. Currently, there are no specific therapeutic options for IBC patients because of very few molecular alterations associated with IBC. Thus, there is an unmet need to identify distinguished features of IBC that differentiate the disease from non-inflammatory breast cancer (nIBC). Metabolomic analysis of cancer cells holds the promise to identify unique chemical fingerprints of important cellular processes. In this study we investigated the global biochemical profiles of IBC and nIBC cells.
METHODS: Three IBC cell lines, SUM190, SUM149, FC-IBC-02, and three nIBC cell lines, MCF-7, MDA-MB-231, MDA-MB-468, with five replicates for each cell line, were analyzed in this study. Metabolomic profiling analysis was performed by Metabolon, Inc (Durham, NC) on the gas chromatography/mass spectroscopy and ultrahigh performance liquid chromatography/mass spectroscopy platforms as previously described (Proc. Natl. Acad. Sci. U. S. A. 108, 3270-3275, 2011). A total of 347 metabolites were detected. Welch's two-sample t-test was used to identify biochemicals that differed significantly between experimental groups (p≤0.001), as well as those approaching significance (0.001<p<0.05).
RESULTS: Comparison of global biochemical profiles for IBC and nIBC cell lines revealed numerous statistically changed metabolites at a p-value threshold of p<0.001. Statistical comparisons also revealed a clear metabolic separation of samples due to cell line differences. Several biochemical pathways emerged as being commonly altered across all IBC cell lines compared to all nIBC cell lines. Notable observations include alterations in inflammatory signaling, energy metabolism, and cell proliferation. Signatures of inflammation were elevated and inflammatory signaling pathways showed activation in IBC cell lines. In energy metabolism, the cellular energy for IBC cells appeared to be derived from amino acid catabolism to a greater extent than in nIBC cells. Furthermore, fatty acids was significantly elevated in IBC cell lines, that may indicate a reduced cellular proliferation and increased glycogen storage in IBC cells. Moreover, an altered methylation and glutathione metabolism were shown in IBC cell lines.
CONCLUSIONS: Our study is the first to demonstrate difference of metabolic profiles between IBC and nIBC cells. Future studies comparing global biochemical profiles in tissue biopsy and blood from IBC and nIBC patients may help to confirm the relevance of these findings in cell lines. Metabolic targets may provide more effective and specific therapeutic strategy for the treatment of IBC patients.
Citation Information: Cancer Res 2013;73(24 Suppl): Abstract nr P3-01-05.
Collapse
Affiliation(s)
- Z Mu
- Thomas Jefferson University and Kimmel Cancer Center, Philadelphia, PA; Metabolon, Inc, Durham, NC; The University of Texas, MD Anderson Cancer Center, Houston, TX
| | - MV Brown
- Thomas Jefferson University and Kimmel Cancer Center, Philadelphia, PA; Metabolon, Inc, Durham, NC; The University of Texas, MD Anderson Cancer Center, Houston, TX
| | - S Fernandez
- Thomas Jefferson University and Kimmel Cancer Center, Philadelphia, PA; Metabolon, Inc, Durham, NC; The University of Texas, MD Anderson Cancer Center, Houston, TX
| | - FM Robertson
- Thomas Jefferson University and Kimmel Cancer Center, Philadelphia, PA; Metabolon, Inc, Durham, NC; The University of Texas, MD Anderson Cancer Center, Houston, TX
| | - M Cristofanilli
- Thomas Jefferson University and Kimmel Cancer Center, Philadelphia, PA; Metabolon, Inc, Durham, NC; The University of Texas, MD Anderson Cancer Center, Houston, TX
| |
Collapse
|
21
|
Dong X, Franco-Barraza J, Mu Z, Alpaugh RK, Cristofanilli M, Cukierman E. Abstract P6-02-05: A novel culturing 3-D model to evaluate the role of tumor microenvironment in IBC. Cancer Res 2012. [DOI: 10.1158/0008-5472.sabcs12-p6-02-05] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Introduction: Inflammatory breast cancer (IBC) is a highly aggressive form of breast cancer associated with extremely poor outcomes. The clinical and pathological characteristics of the disease are the peculiar invasion of the dermal lymphatics as tumor emboli and the development of early recurrences. We aimed to establish a 3D model to evaluate the role of tumor microenvironment.
Methods: We used human tumor-associated fibroblasts (or fibroblasts derived from metastatic skin) from IBC patients to build a multilayer extracellular matrix structure which effectively mimics aspects of the mesenchymal microenvironment of IBCs. Using this in vivo-like microenvironment we proceeded to test both matrix effects upon IBC's phenotypes and IBC modifications upon the cell-derived 3D matrices.
We seeded the IBC cells into the matrix and cultured for 3 days, then tested the characterization markers cancer cells and ECM e.g. Phalloidin, E-cadherin, Ki67, α5β1 integrin and fibronectin by immunofluorescence and the expression of E-cadherin and vimentin as marker of epithelial-mesenchymal transition (EMT) by western blot.
Results: We divided six IBC cell lines into 2 groups depending on the phenotypes acquired when cultured in the IBC fibroblast-derived ECM. SUM149 (EGF receptor positive and aggressive phenotype), BR016 and LG018 (harvested from patient's pleural effusions) presented a single cell organization with a spindle-like or mesenchymal type (as opposed to cluster) morphology. In comparison, SUM190 (HER2 positive and non aggressive tumorigenesis), MDA-IBC-3 and FC-IBC-02 (abstracted from patient's pleural effusion) presented a phenotype resembling mammospheres or in vivo emboli. Moreover, this last group of cells showed a peculiar capability for ECM modifications which greatly differed from the ECM modifications that were apparent following 3 day culturing of the above mentioned group represented by SUM149. In addition, proliferation measurements by Ki67 expression demonstrated a significant increased in 3D culture for SUM149, BR016 and LG018 compared with that in 2D culture, while no differences in proliferation were observed in the other three cell lines. Moreover, the expression of E-cadherin known to be upregulated in IBC tumors was increased in all cancer cells when seeded into the human fibroblast-derived 3D matrix indicating a potential role of the microenvironment in promoting proliferation, growth and invasion.
Conclusion: The present study demonstrated the establishment of a novel IBC stromal 3D model using extracellular matrix produced from human fibroblasts of patients with advanced IBC. We showed a dynamic interaction between cancer cells and the microenvironment and potential sorting of IBC cells into two discrete groups which also correlate with their aggressive behaviors in vivo. We believe that these system may serve to predict levels of IBC tumorigenesis. We will proceed to further study the two identified responsive phenotypes with the goal of uncovering mechanisms of IBC tumor-stromal interactions and better understand ECM influences upon IBC development and progression. The ultimate goal will be to use the system to study IBC biology and better design drugs that will specifically affect the newly identified phenotypes.
Citation Information: Cancer Res 2012;72(24 Suppl):Abstract nr P6-02-05.
Collapse
Affiliation(s)
- X Dong
- Fox Chase Cancer Center, Philadelphia, PA
| | | | - Z Mu
- Fox Chase Cancer Center, Philadelphia, PA
| | - RK Alpaugh
- Fox Chase Cancer Center, Philadelphia, PA
| | | | | |
Collapse
|
22
|
Chu K, Mu Z, Alpaugh KR, Fernandez S, Freiter EM, Wu H, Zook MB, Barsky SH, Cristofanilli M, Robertson FM. P4-03-06: Development and Comparative Characterization of Metastasis in Newly Developed Pre-Clinical Models of Inflammatory Breast Cancer. Cancer Res 2011. [DOI: 10.1158/0008-5472.sabcs11-p4-03-06] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Inflammatory breast cancer (IBC) is the most metastatic variant of breast cancer. It is associated with a poor survival rate (40% 5-year survival) despite appropriate multidisciplinary care. For such an aggressive type of cancer, IBC has been understudied, in part due to the lack of adequate numbers of cell lines and mouse models that recapitulate the human disease. To expand our understanding of IBC, we have obtained all of the previously developed and characterized IBC cell lines and models including Mary-X, SUM149, SUM190, KPL-4, MDA-IBC-3 and have developed two new IBC models, designated as FC-IBC01 and FC-IBC02, using tumor cells derived from pleural effusion of IBC patients.
Materials and Methods: Each of these IBC cell lines has been luciferase (LUC)-tagged, allowing the growth of orthotopic injection or subcutaneous implantation to be evaluated by bioluminescent imaging (BLI). Alternatively, the LUC-tagged IBC cells can by injected via either intra-cardiac or intravenous route of delivery, which promotes rapid tumor colonization, resulting in both visceral and skeletal metastasis. Growth of IBC tumors can then be monitored immediately using BLI, thus eliminating the lag time needed for the physical detection of palpable tumors. BLI imaging also allows for monitoring of the kinetics and location of development of metastatic lesions. Whole transcriptome analysis was performed on IBC cell lines and xenograft tissues to define the heterogeneity of IBC as a distinct variant of breast cancer
Results: These models have allowed us to identify micro-metastatic foci in multiple sites distant from the IBC primary tumor in each of these models of IBC and allow the quantitation of anti-tumor and anti-metastatic effects of targeted therapeutics as single agents as well as the potential synergy of combinations of agents. As an example, injection of LUC-tagged IBC cell lines such as SUM149-Luc, into the left ventricle of NOD.Cg-Prkdcscid Il2rgtm1Wjl/SzJ mice allows the metastatic tumor burden to be monitored longitudinally by whole animal BLI, which can be validated at necropsy and by immunohistochemical analysis. Whole transcriptome analysis of pre-clinical models of IBC reflect the molecular subtypes observed in IBC patients, with the majority of IBC models being of the basal like, luminal B and Her2 amplified. Discussion: First time analysis of known and newly developed pre-clinical models of IBC allows a more complete analysis of IBC as a distinct variant of breast cancer. Furthermore, these approaches allow rapid evaluation of the promising targeted therapeutics identified based on whole transcriptome analysis of both IBC patient tumors and pre-clinical models developed from IBC patients. We believe that this extensive collection of LUC-tagged IBC cell lines is an invaluable tool for IBC research since the cell lines encompass the broad spectrum of IBC heterogeneity.
Citation Information: Cancer Res 2011;71(24 Suppl):Abstract nr P4-03-06.
Collapse
Affiliation(s)
- K Chu
- 1The University of Texas MD Anderson Cancer Center, Houston, TX; Fox Chase Cancer Center, Philadelphia, PA; University of Nevada School of Medicine, Reno, NV; Nevada Cancer Institute, Las Vegas, NV
| | - Z Mu
- 1The University of Texas MD Anderson Cancer Center, Houston, TX; Fox Chase Cancer Center, Philadelphia, PA; University of Nevada School of Medicine, Reno, NV; Nevada Cancer Institute, Las Vegas, NV
| | - KR Alpaugh
- 1The University of Texas MD Anderson Cancer Center, Houston, TX; Fox Chase Cancer Center, Philadelphia, PA; University of Nevada School of Medicine, Reno, NV; Nevada Cancer Institute, Las Vegas, NV
| | - S Fernandez
- 1The University of Texas MD Anderson Cancer Center, Houston, TX; Fox Chase Cancer Center, Philadelphia, PA; University of Nevada School of Medicine, Reno, NV; Nevada Cancer Institute, Las Vegas, NV
| | - EM Freiter
- 1The University of Texas MD Anderson Cancer Center, Houston, TX; Fox Chase Cancer Center, Philadelphia, PA; University of Nevada School of Medicine, Reno, NV; Nevada Cancer Institute, Las Vegas, NV
| | - H Wu
- 1The University of Texas MD Anderson Cancer Center, Houston, TX; Fox Chase Cancer Center, Philadelphia, PA; University of Nevada School of Medicine, Reno, NV; Nevada Cancer Institute, Las Vegas, NV
| | - MB Zook
- 1The University of Texas MD Anderson Cancer Center, Houston, TX; Fox Chase Cancer Center, Philadelphia, PA; University of Nevada School of Medicine, Reno, NV; Nevada Cancer Institute, Las Vegas, NV
| | - SH Barsky
- 1The University of Texas MD Anderson Cancer Center, Houston, TX; Fox Chase Cancer Center, Philadelphia, PA; University of Nevada School of Medicine, Reno, NV; Nevada Cancer Institute, Las Vegas, NV
| | - M Cristofanilli
- 1The University of Texas MD Anderson Cancer Center, Houston, TX; Fox Chase Cancer Center, Philadelphia, PA; University of Nevada School of Medicine, Reno, NV; Nevada Cancer Institute, Las Vegas, NV
| | - FM Robertson
- 1The University of Texas MD Anderson Cancer Center, Houston, TX; Fox Chase Cancer Center, Philadelphia, PA; University of Nevada School of Medicine, Reno, NV; Nevada Cancer Institute, Las Vegas, NV
| |
Collapse
|
23
|
Liu H, Luo AZ, Mu Z, Chu K, Ye Z, Alpaugh RK, Fernandez S, Boley KM, Jin J, Wright MC, Cristofanilli M, Robertson FM. P2-05-04: Mapping the Specific Gene Families Activated in the Lymphangiogenesis and Vasculogenic Mimicry Exhibited by Inflammatory Breast Cancer. Cancer Res 2011. [DOI: 10.1158/0008-5472.sabcs11-p2-05-04] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Inflammatory breast cancer (IBC) is the most metastatic variant of locally advanced breast cancer. Although IBC is diagnosed less commonly than other types of breast cancer, it is extremely aggressive, and accounts for a disproportionate number of breast cancer related deaths annually. IBC exhibits very specific patterns of lymphangiogenesis and vasculogenic mimicry, however detailed studies of the genes and proteins involved in these angiogenic processes are lacking. This study performed whole unbiased gene transcription studies with validation by protein arrays using all available pre-clinical cell lines and in vivo xenograft models of IBC, including a new model of IBC, FC-IBC01, which exhibits lymphovascular invasion, to identify the specific pathways involved in the distinctive angiogenesis observed in IBC.
Materials and Methods: Real-time quantitative RT-PCR, cDNA microarray gene profiling, immunofluorescence with confocal imaging and protein arrays were used to examine differential expression of specific angiogenic gene families including VEGFA,B,C,D, VEGF Receptor genes, and ANG/TIE genes linked to angiogenesis and lymphangiogenesis.
Results: Activity of the matrix metalloproteinase, MMP-2, is required for IBC tumor cells to undergo vasculogenic mimicry (VM), which is associated with a loss of TIMP-2, a well known inhibitor of angiogenesis. Therapeutics that target MMP activity can successfully inhibit this VM. Furthermore, pre-clinical models of IBC that form IBC tumor emboli exhibit lymphovascular invasion that is associated with distinct patterns of expression of genes that encode for distinct receptor tyrosine kinases that may represent important therapeutic targets for IBC.
Discussion: Identification of the distinct angiogenic pathways that are activated in IBC provides insight into the therapeutic targets that may abrogate the distinct lymphovascular invasion and vasculogenic mimicry that are linked to the aggressive metastasis of IBC.
Citation Information: Cancer Res 2011;71(24 Suppl):Abstract nr P2-05-04.
Collapse
Affiliation(s)
- H Liu
- 1The University of Texas, MD Anderson Cancer Center, Houston, TX; Fox Chase Cancer Center, Philadelphia, PA
| | - AZ Luo
- 1The University of Texas, MD Anderson Cancer Center, Houston, TX; Fox Chase Cancer Center, Philadelphia, PA
| | - Z Mu
- 1The University of Texas, MD Anderson Cancer Center, Houston, TX; Fox Chase Cancer Center, Philadelphia, PA
| | - K Chu
- 1The University of Texas, MD Anderson Cancer Center, Houston, TX; Fox Chase Cancer Center, Philadelphia, PA
| | - Z Ye
- 1The University of Texas, MD Anderson Cancer Center, Houston, TX; Fox Chase Cancer Center, Philadelphia, PA
| | - RK Alpaugh
- 1The University of Texas, MD Anderson Cancer Center, Houston, TX; Fox Chase Cancer Center, Philadelphia, PA
| | - S Fernandez
- 1The University of Texas, MD Anderson Cancer Center, Houston, TX; Fox Chase Cancer Center, Philadelphia, PA
| | - KM Boley
- 1The University of Texas, MD Anderson Cancer Center, Houston, TX; Fox Chase Cancer Center, Philadelphia, PA
| | - J Jin
- 1The University of Texas, MD Anderson Cancer Center, Houston, TX; Fox Chase Cancer Center, Philadelphia, PA
| | - MC Wright
- 1The University of Texas, MD Anderson Cancer Center, Houston, TX; Fox Chase Cancer Center, Philadelphia, PA
| | - M Cristofanilli
- 1The University of Texas, MD Anderson Cancer Center, Houston, TX; Fox Chase Cancer Center, Philadelphia, PA
| | - FM Robertson
- 1The University of Texas, MD Anderson Cancer Center, Houston, TX; Fox Chase Cancer Center, Philadelphia, PA
| |
Collapse
|
24
|
Chen L, Mu Z, Chen X, Cvetkovic D, Pollack A, Ma C. SU-E-U-01: MR Guided Pulsed High Intensity Focused Ultrasound Enhancement of Chemotherapy for Prostate Cancer. Med Phys 2011. [DOI: 10.1118/1.3612862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
|
25
|
Chen L, Mu Z, Chen X, Cvetkovic D, Pollack A, Ma C. WE-E-220-07: Therapeutic Effects of Pulsed Focused Ultrasound Enhancement of Docetaxel Combined with Radiotherapy on Prostate Cancer In Vivo. Med Phys 2011. [DOI: 10.1118/1.3613402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
|
26
|
|
27
|
Ma C, Mu Z, Chen L. SU-GG-J-134: Non-Thermal Cell Damage and Therapeutic Potential of MR Guided High-Intensity Focused Ultrasound. Med Phys 2010. [DOI: 10.1118/1.3468358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
|
28
|
Ma C, Mu Z, Chen L. TH-C-204B-06: MR Guided High-Intensity Focused Ultrasound for Cancer Therapy: A Feasibility Study Using an Animal Model. Med Phys 2010. [DOI: 10.1118/1.3469499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
|
29
|
Chen L, Mu Z, Wallentine A, Pollack A, Ma C. SU-GG-I-139: Synergetic Effect of Docetaxel and MR Guided Focused Ultrasound (MRgFUS) for Prostate Cancer. Med Phys 2010. [DOI: 10.1118/1.3468173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
|
30
|
Chen L, Mu Z, Pollack A, Ma. SU-GG-I-143: An in Vivo Study on the Enhancement of Gene Therapy with MR-Guided Focused Ultrasound (MRgFUS). Med Phys 2010. [DOI: 10.1118/1.3468178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
|
31
|
Fu D, Kahn R, Wang B, Wang H, Mu Z, Kuduvalli G, Maurer C. Fiducial-free Lung Tumor Tracking for CyberKnife Radiosurgery. Int J Radiat Oncol Biol Phys 2008. [DOI: 10.1016/j.ijrobp.2008.06.235] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
32
|
Chen L, Mu Z, Hachem P, Konski A, Freedman G, Ma C, Pollack A. MR Guided Focused Ultrasound for Cancer Therapy: Enhancement of Drug Delivery in Prostate Tumor In Vivo. Int J Radiat Oncol Biol Phys 2008. [DOI: 10.1016/j.ijrobp.2008.06.101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
33
|
Mu Z, Hachem P, Cheung L, Stoyanova R, Pollack A. Therapeutic Effects of Edelfosine with Androgen Deprivation in Androgen Sensitive Prostate Cancer Cells In Vitro and In Vivo. Int J Radiat Oncol Biol Phys 2008. [DOI: 10.1016/j.ijrobp.2008.06.1086] [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: 11/25/2022]
|
34
|
Chen L, Mu Z, Hachem P, Chung L, Richardson T, Ma C, Pollack A. MO-E-AUD C-04: MR Guided Focused Ultrasound (MRgFU) for Treatment of Prostate Cancer: Feasibility Study of Incresing Intratumoral Uptake of Docetaxel in Vivo. Med Phys 2008. [DOI: 10.1118/1.2962393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
|
35
|
Chen L, Mu Z, Hachem P, Konski A, Freedman G, Pollack A, Ma C. SU-GG-J-133: MR Guided Focused Ultrasound (MRgFU) for Cance Therapy. Med Phys 2008. [DOI: 10.1118/1.2961682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
|
36
|
Chen L, Hachem P, Hananel A, Mu Z, Padovani L, Mercier C, Khor L, Kwon H, Ma C, Pollack A. TH-C-M100J-09: MR Guided Focused Ultrasound (MRgFU) For The Treatmentment of Prostate Cancer: A Feasibility Study of Increasing Cellular Uptake of AS-MDM2 in Vivo. Med Phys 2007. [DOI: 10.1118/1.2761657] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
|
37
|
Affiliation(s)
- D. Zhu
- a Department of Chemistry , Institute of Functional Materials, Northeast Normal University , Changchun, Jilin, 130024, PR China
| | - Z. Su
- a Department of Chemistry , Institute of Functional Materials, Northeast Normal University , Changchun, Jilin, 130024, PR China
| | - Z. Mu
- a Department of Chemistry , Institute of Functional Materials, Northeast Normal University , Changchun, Jilin, 130024, PR China
| | - Y. Qiu
- a Department of Chemistry , Institute of Functional Materials, Northeast Normal University , Changchun, Jilin, 130024, PR China
| | - Y. Wang
- a Department of Chemistry , Institute of Functional Materials, Northeast Normal University , Changchun, Jilin, 130024, PR China
| |
Collapse
|
38
|
Abstract
Eating Attitude Test-26 (EAT-26) and self-administered questionnaires were used to survey eating attitudes and menstrual irregularity of Japanese (J) and Chinese (C) collegiate female runners (RUNs), rhythmic gymnasts (RGYMs), gymnasts (GYMs), and nonathletic controls (NAs). Athletes were recruited from several outstanding colleges for physical education and sport in each country. The prevalence of disordered eating (DE) was significantly higher in Japanese athletes (21% in JRUNs, 19% in JRGYMs, and 15% in JGYMs) than Chinese athletes (4% in CRUNs, 2% in CRGYMs, and none in CGYMs). Also, the prevalence of amenorrhea was very low in CRUNs (1%), CRGYMs (0%), and CGYMs (0%), as compared with their respective Japanese counterparts (JRUNs 22%, JRGYMs 10%, JGYMs 8%). There was no significant difference in the prevalence of DE and amenorrhea between Japanese and Chinese NAs. Multivariate logistic regression analysis using 10 independent variables regarding anthropometrics, athletics, weight and diet concern, and nationality indicated that high frequency of dieting during a lifetime, high athletic level and being Japanese were significant risks for the development of DE in athletes. It is concluded that the low prevalence of DE in the Chinese in this study is partly explained by the lack of socioculturally- and socioeconomically-imposed desire to be thin as well as by the low frequency of dieting during their lifetime.
Collapse
Affiliation(s)
- G Okano
- Division of Exercise Science, Sapporo Medical University, Sapporo, Japan.
| | | | | | | | | | | |
Collapse
|
39
|
Hannoun-Levi J, Hachem P, Mu Z, Agrawal S, Pollack A. Protein kinase a riα antisense sensitization of radiation and androgen deprivation. Int J Radiat Oncol Biol Phys 2004. [DOI: 10.1016/j.ijrobp.2004.07.374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
40
|
Mu Z, Hachem P, Pollack A. Antisense to Bcl-2 (Genasense™) sensitizes prostate cancer cells to radiation. Int J Radiat Oncol Biol Phys 2004. [DOI: 10.1016/j.ijrobp.2004.06.104] [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: 11/26/2022]
|
41
|
Mu Z, Hachem P, Agrawal S, Pollack A. Antisense MDM2 oligonucleotides restore the apoptotic response of prostate cancer cells to androgen deprivation. Int J Radiat Oncol Biol Phys 2002. [DOI: 10.1016/s0360-3016(02)03387-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
42
|
Mu Z, Zhang X. [The energy levels and oscillator strengths for transitions 3d(10)4s-3d94s4p in ions from Cu I -As V]. Guang Pu Xue Yu Guang Pu Fen Xi 1999; 19:518-520. [PMID: 15818943] [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: 05/24/2023]
Abstract
The energy levels of configurations 3d(10)4s and 3d(9)4s4p of copper-like ions from Cu I to As V were calculated by means of the configuration interaction theory and parametric fit interpolation method. Calculated energy levels of 3d(9)4s4p are all in good agreement with experimental values . Most energy levels of ions Zn II and Ga III are sheer predicated ones. Also, the transition wavelengths and corresponding oscillator strengths of 3d(10)4s-3d(9)4s4p were calculated.
Collapse
Affiliation(s)
- Z Mu
- Department of Mathematics & Mechanics, China University of Mining & Technology, 221008 Xuzhou
| | | |
Collapse
|
43
|
Abstract
In this study, we report that the cytoplasmic domain of the integrin beta3 subunit is a target for limited proteolysis during apoptosis of human umbilical vein endothelial cells. Calpain inhibitors inhibited the cleavage of the beta3 cytoplasmic domain, indicating that calpain is required. Calpain-mediated proteolysis of fodrin was also detected, indicating that calpain is activated during endothelial cell apoptosis. A phosphatase inhibitor, sodium orthovanadate, inhibited endothelial cell apoptosis and cleavage beta3, suggesting that protein dephosphorylation preceded integrin cleavage in the apoptosis signaling pathway. beta3 cleavage was observed in cells that were viable, suggesting that it is an early event and not the consequence of post-death proteolysis. The extent of beta3 cleavage correlated with a loss in the capacity of cells to reattach to matrix proteins. Loss of reattachment capacity during apoptosis was significantly retarded by a calpain inhibitor. As the beta3 cytoplasmic domain is required for integrin signaling and interaction with the cytoskeleton, our results suggest that cleavage in the beta3 cytoplasmic domain by calpain or a calpain-like protease negatively regulates integrin-mediated adhesion, signaling, and cytoskeleton association.
Collapse
Affiliation(s)
- J Meredith
- Department of Vascular Biology, The Scripps Research Institute, La Jolla, California 92037, USA
| | | | | | | |
Collapse
|
44
|
Sumikawa K, Mu Z, Inoue T, Okochi T, Yoshida T, Adachi K. Changes in erythrocyte membrane phospholipid composition induced by physical training and physical exercise. Eur J Appl Physiol Occup Physiol 1993; 67:132-7. [PMID: 8223518 DOI: 10.1007/bf00376656] [Citation(s) in RCA: 29] [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] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The effects were investigated of physical training and exercise on lipids of the erythrocyte membrane of healthy students. Membrane cholesterol and phospholipids were analysed simultaneously by thin-layer chromatography with a flame ionization detector and the fatty acid composition was determined by gas chromatography. Physically trained students had similar physical characteristics to control students but a significantly higher aerobic capacity, estimated as the maximal oxygen uptake and anaerobic threshold. Of the phospholipids examined, only the content of membrane phosphatidylserine was significantly lower in the trained group. Fatty acid analysis showed that the amount of docosahexaenoic acid in membrane phosphatidylserine was lower in the trained group. There was no significant difference between the fatty acid compositions of membrane phosphatidylcholine in the two groups. Maximal exercise decreased membrane phosphatidylserine in the control group but not in the trained group. It also significantly decreased the relative amounts of unsaturated fatty acids in both phosphatidylcholine and phosphatidylserine in the untrained group. Maximal oxygen uptake was negatively correlated with the amount of erythrocyte membrane phosphatidylserine. These results would indicate that both physical training and acute exercise decrease phosphatidylserine and polyunsaturated fatty acids in erythrocyte membranes, possibly due to lipid peroxidation, suggesting limited enhancement of erythrocyte defense mechanisms in adaptation to chronic oxidative stress.
Collapse
Affiliation(s)
- K Sumikawa
- Faculty of Health and Sport Sciences, Osaka University, Japan
| | | | | | | | | | | |
Collapse
|
45
|
Abstract
Effects of exercise on the formation of 8-hydroxydeoxyguanosine (8-OH-dG), a biomarker of oxidative DNA damage, and other purine metabolites such as hypoxanthine, xanthine and uric acid were examined. Venous blood and urine were collected from swimmers and distance runners before and after the usual training. The amount of 8-OH-dG obtained from nuclear DNA of lymphocytes decreased remarkably after intermittent swimming. The amount of nuclear 8-OH-dG also declined after distance running, but this difference is statistically not significant. After each exercise, plasma concentrations of hypoxanthine, xanthine and uric acid rose significantly. Urinary excretion of hypoxanthine increased, and xanthine and uric acid decreased after exercise. The 8-OH-dG-to-creatinine ratio in urine increased slightly after swimming or running. It is supposed that the repair of oxidative DNA damage is augmented by exercise. As far as we know, this is the first report concerning the effect of exercise on oxidative damage in nuclear DNA.
Collapse
Affiliation(s)
- T Inoue
- Faculty of Health and Sport Sciences, Osaka University
| | | | | | | | | |
Collapse
|
46
|
Abstract
Twelve trained males, in a fed state, were studied to examine the effect of pre-exercise fructose ingestion on endurance capacity during prolonged cycling exercise. Sixty minutes prior to exercise, subjects ingested either 60 or 85 g fructose or a sweet placebo. Mean exercise intensity initially required 62% of the maximal aerobic power and thereafter increased to elicit 72 and 81% of maximal aerobic power at 90 and 120 min of exercise, respectively. Exercise time (mean +/- SE) to exhaustion was significantly increased after fructose ingestion, as compared to placebo ingestion (145 +/- 4 vs 132 +/- 3 min, P less than 0.01). During the exercise, no differences were observed between both trials for oxygen uptake, heart rate, or perceived exertion. Serum glucose and insulin levels between both trials were not significantly different throughout the experiment. There were also no significant differences in serum-free fatty acids and glycerol levels as well as respiratory exchange ratio between fructose and placebo trials during the exercise. The results suggest that fructose ingestion is of benefit before prolonged exercise, because it provides a carbohydrate source to contracting muscles without transient hypoglycemia and a depression of fat utilization, and thereby delays the fatigue.
Collapse
Affiliation(s)
- G Okano
- Department of Health and Physical Education, Sapporo Medical College, Japan
| | | | | | | | | | | |
Collapse
|