26
|
Tokuda E, Komatsu T, Sasaki S, Tsuboi K, Nakamura M, Iida M, Niwa T, Saito M, Hayashi SI. Abstract P4-03-12: Effects of PI3K inhibitors on endocrine-resistant cell lines and differences in the characteristics of ER positive breast cancer cells after acquired resistance to the inhibitors. Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-p4-03-12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background
Mutations in phosphatidylinositol 3-kinase (PI3K), which encodes the catalytic subunit of PI3Kα, is one of the most frequent genomic alterations and is found in about 40% of estrogen receptor (ER)-positive, HER2 negative breast cancers. PIK3CA mutations promote the growth and proliferation of cancers via activation of the PI3K/mammalian target of rapamycin pathway and can mediate resistance to endocrine therapies in breast cancer. Although several clinical trials for PI3K inhibitors (PI3Kis) in ER-positive metastatic breast cancers are ongoing, the effects of PI3Kis on endocrine-resistant breast cancers with various characteristics and definitive biomarkers of PI3Kis are unclear. Using endocrine-resistant cells established in our laboratory, we evaluated the efficacy of PI3Ki in these cell lines and identified the characteristics associated with acquired resistance to PI3Kis in endocrine-resistant cells.
Results
Long-term estrogen deprivation-resistant (EDR) cell lines and fulvestrant-resistant cell lines (MFR and TFR) were established from MCF-7 and T-47D cells in our previous studies. These cell lines showed different ER expression levels, including high expression (EDR-1), low expression (EDR-2, -3), or no expression (MFR, TFR); all of these cell lines had the same PIK3CA mutations as the parental cell lines. The pan-class1 PI3Ki buparlisib (BKM120) and α-specific PI3K inhibitor alpelisib (BYL719) inhibited the proliferation of endocrine-resistant cell lines when compared with their parental cells. Among endocrine-resistant cells, MFR cells were dramatically inhibited by PI3Kis. Colony formation assays indicated that MFR cells were more sensitive to PI3Kis than other cells lines. Next, we established PI3Ki- and everolimus-resistant cell lines from EDR-1, EDR-2, and MFR cells using BKM120, BYL719, and everolimus. Analysis of the time required to generate resistant cells showed that MFR cells required twice as long to acquire resistance compared with EDR cells. Furthermore, the time required to acquire resistance to BYL719 was shorter than that for BKM120. BYL719-resistant (BYL-R) cells were effectively inhibited by BKM120 to a degree similar to that of parental cells; however, BYL-R cells lost sensitivity to BYL719 and everolimus. Evelolimus-resistant (EVE-R) cells were also the same. In contrast, BKM120-resistant (BKM-R) cells showed less sensitivity to BKM120, BYL719, and everolimus. In other words, the pan-PI3Ki BKM120 was able to inhibit the growth of BYL-R and EVE-R cells, whereas BYL719 and everolimus were not able to inhibit BKM-R cells sufficiently. In addition, there were no changes in ER expression in EDR-1, EDR-2, and MFR cells exposed to PI3Kis for 1 h. Interestingly, ER expression on EDR-2 cells with acquired resistance to PI3Kis was increased compared with that in parental cells.
Conclusion
Our findings showed that PI3Kis exhibited remarkable efficacy in all types of EDR cells, particularly in fulvestrant-resistant cell lines. In PI3Ki- and everolimus-resistant cell lines, BKM120 and BYL719 showed different effects, and BYL719 and everolimus may exhibit cross-resistance. Furthermore, PI3Kis were likely to change the expression of ER.
Citation Format: Tokuda E, Komatsu T, Sasaki S, Tsuboi K, Nakamura M, Iida M, Niwa T, Saito M, Hayashi S-I. Effects of PI3K inhibitors on endocrine-resistant cell lines and differences in the characteristics of ER positive breast cancer cells after acquired resistance to the inhibitors [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr P4-03-12.
Collapse
|
27
|
Sasaki S, Koga H, Krosshaug T, Kaneko S, Fukubayashi T. Kinematic analysis of pressing situations in female collegiate football games: New insight into anterior cruciate ligament injury causation. Scand J Med Sci Sports 2017; 28:1263-1271. [DOI: 10.1111/sms.13018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/08/2017] [Indexed: 12/19/2022]
|
28
|
Unno Y, Sanami T, Sasaki S, Hagiwara M, Yunoki A. Evaluation of absolute measurement using a 4π plastic scintillator for the 4πβ-γ coincidence counting method. Appl Radiat Isot 2017; 134:302-306. [PMID: 29102161 DOI: 10.1016/j.apradiso.2017.10.029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2017] [Revised: 09/08/2017] [Accepted: 10/13/2017] [Indexed: 11/16/2022]
Abstract
Absolute measurement by the 4πβ-γ coincidence counting method was conducted by two photomultipliers facing across a plastic scintillator to be focused on β ray counting efficiency. The detector was held with a through-hole-type NaI(Tl) detector. The results include absolutely determined activity and its uncertainty especially about extrapolation. A comparison between the obtained and known activities showed agreement within their uncertainties.
Collapse
|
29
|
Sakurai T, Shibusaka K, Kubo Y, Sasaki S. Biomechanical analysis for the different types of jump shot in basketball – A research of risk factors for ACL injury. J Sci Med Sport 2017. [DOI: 10.1016/j.jsams.2017.09.235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
30
|
Motomura H, Watanabe J, Togo S, Sumiyoshi I, Namba Y, Suina K, Mizuno T, Kadoya K, Iwai M, Nagaoka T, Sasaki S, Hayashi T, Uekusa T, Abe K, Urata Y, Sakurai F, Mizuguchi H, Kato S, Takahashi K. P1.03-006 Clinicopathological Features and Poor Outcome for ALK Inhibitors of Squamous Cell Lung Cancer with ALK-Rearrangement. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
31
|
Baba F, Shibamoto Y, Iwana M, Nomura K, Sasaki S, Nagayoshi J. Comparison of the Reproducibility of Tumor Positions in the Liver and Upper Abdomen With Those in the Lung With Exhalation Breath-Holding Methods. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
32
|
Yoshida M, Ogino H, Iwata H, Hattori Y, Hashimoto S, Nakajima K, Senoo K, Kuwabara Y, Sasaki S, Hara M, Sekido Y, Mizoe J, Shibamoto Y. Transient Increases of Serum AFP and PIVKA-II Levels After Proton Therapy Do Not Necessarily Indicate Progression of Hepatocellular Carcinoma. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
33
|
Hashimoto S, Ogino H, Iwata H, Hattori Y, Nakajima K, Nakanishi M, Baba F, Sasaki S, Shimamura Y, Kuwabara Y, Senoo K, Shibamoto Y, Mizoe J. Efficacy of Proton Beam Therapy for Hepatocellular Carcinoma With Portal Vein or Inferior Vena Cava Tumor Thrombosis. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.965] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
34
|
Sasaki S, Hashimoto K, Kobayashi R, Itoh K, Iguchi S, Nishio Y, Ikemoto Y, Moriwaki T, Yoneyama N, Watanabe M, Ueda A, Mori H, Kobayashi K, Kumai R, Murakami Y, Müller J, Sasaki T. Crystallization and vitrification of electrons in a glass-forming charge liquid. Science 2017; 357:1381-1385. [PMID: 28963251 DOI: 10.1126/science.aal3120] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Accepted: 08/23/2017] [Indexed: 11/03/2022]
Abstract
Charge ordering (CO) is a phenomenon in which electrons in solids crystallize into a periodic pattern of charge-rich and charge-poor sites owing to strong electron correlations. This usually results in long-range order. In geometrically frustrated systems, however, a glassy electronic state without long-range CO has been observed. We found that a charge-ordered organic material with an isosceles triangular lattice shows charge dynamics associated with crystallization and vitrification of electrons, which can be understood in the context of an energy landscape arising from the degeneracy of various CO patterns. The dynamics suggest that the same nucleation and growth processes that characterize conventional glass-forming liquids guide the crystallization of electrons. These similarities may provide insight into our understanding of the liquid-glass transition.
Collapse
|
35
|
Nagai M, Dote K, Kato M, Sasaki S, Oda N, Kagawa E, Nakano Y, Yamane A, Higashihara T, Miyauchi S, Tsuchiya A. P3442Cognitive impairment: a mediator for the relationship of visit-to-visit blood pressure variability and long sleep duration with cardiovascular death in the elderly. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p3442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
36
|
Miyauchi S, Nagai M, Dote K, Kato M, Sasaki S, Oda N, Kagawa E, Nakano Y. P3557In-hospital blood pressure variability and arterial stiffness: associations with coronary calcification in patients with acute myocardial infarction. Data from optical frequency domain imaging study. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p3557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
37
|
Higashihara T, Dote K, Kato M, Sasaki S, Oda N, Kagawa E, Nakano Y, Nagai M, Yamane A, Miyauchi S, Tsuchiya A. P4644Myocardial wash grade: a novel index for evaluating the quality of reperfusion therapy in acute myocardial infarction. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p4644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
38
|
Kagawa E, Dote K, Kato M, Sasaki S, Oda N, Nakano Y, Nagai M, Higashihara T, Miyauchi S, Tsuchiya A. P2777Resuscitation duration and initial recorded rhythms in extracorporeal cardiopulmonary resuscitation. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p2777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
39
|
Tsuchiya A, Nagai M, Dote K, Wakabayashi M, Nakamura K, Katou M, Sasaki S, Oda N, Kagawa E, Nakano Y, Yamane A, Higashihara T. P3441The uric acid paradox for cognitive dysfunction in the elderly patients with heart failure: nutritional status as a significant moderator? Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p3441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
40
|
Nagai M, Dote K, Kato M, Sasaki S, Oda N. Insular cortex and QT correction interval: an effect of hemispheric lateralization? Eur J Neurol 2017. [DOI: 10.1111/ene.13333] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
|
41
|
Sasaki S, Horiuchi D, Ishida Y, Shoji Y, Kinjo T, Nishizaki K, Kimura M. P1491Usefulness of the wearable cardioverter-defibrillator in acute-phase in-hospital care of patients at high risk of sudden cardiac death: single-center Japanese experience. Europace 2017. [DOI: 10.1093/ehjci/eux158.117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
42
|
Kimura M, Horiuchi D, Sasaki K, Ishida Y, Kinjo T, Shoji Y, Sasaki S. P1456Plotted pulmonary vein antrum partition mapping: a novel maneuver to detect and eliminate residual conduction gaps in an ablation line. Europace 2017. [DOI: 10.1093/ehjci/eux158.083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
43
|
Kondo Y, Sasaki S, Sears S, Okamoto M, Gerritse B, Schloss E, Meijer A, Auricchio A, Sterns L, Kurita T. P1742Assessment of quality of life and ICD shock-related anxiety in patients with implantable cardioverter defibrillator: the PainFree SST study. Europace 2017. [DOI: 10.1093/ehjci/eux161.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
44
|
Takewaki M, Kajiya M, Takeda K, Sasaki S, Motoike S, Komatsu N, Matsuda S, Ouhara K, Mizuno N, Fujita T, Kurihara H. MSC/ECM Cellular Complexes Induce Periodontal Tissue Regeneration. J Dent Res 2017; 96:984-991. [PMID: 28521114 DOI: 10.1177/0022034517708770] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Transplantation of mesenchymal stem cells (MSCs), which possess self-renewing properties and multipotency, into a periodontal defect is thought to be a useful option for periodontal tissue regeneration. However, developing more reliable and predictable implantation techniques is still needed. Recently, we generated clumps of an MSC/extracellular matrix (ECM) complex (C-MSC), which consisted of cells and self-produced ECM. C-MSCs can regulate their cellular functions in vitro and can be grafted into a defect site, without any artificial scaffold, to induce bone regeneration. Accordingly, this study aimed to evaluate the effect of C-MSC transplantation on periodontal tissue regeneration in beagle dogs. Seven beagle dogs were employed to generate a premolar class III furcation defect model. MSCs isolated from dog ilium were seeded at a density of 7.0 × 104 cells/well into 24-well plates and cultured in growth medium supplemented with 50 µg/mL ascorbic acid for 4 d. To obtain C-MSCs, confluent cells were scratched using a micropipette tip and were then torn off as a cellular sheet. The sheet was rolled up to make round clumps of cells. C-MSCs were maintained in growth medium or osteoinductive medium (OIM) for 5 or 10 d. The biological properties of C-MSCs were evaluated in vitro, and their periodontal tissue regenerative activity was tested by using a dog class III furcation defect model. Immunofluorescence analysis revealed that type I collagen fabricated the form of C-MSCs. OIM markedly elevated calcium deposition in C-MSCs at day 10, suggesting its osteogenic differentiation capacity. Both C-MSCs and C-MSCs cultured with OIM transplantation without an artificial scaffold into the dog furcation defect induced periodontal tissue regeneration successfully compared with no graft, whereas osteogenic-differentiated C-MSCs led to rapid alveolar bone regeneration. These findings suggested that the use of C-MSCs refined by self-produced ECM may represent a novel predictable periodontal tissue regenerative therapy.
Collapse
|
45
|
Onogi A, Sasaki S, Kobayashi M, Ogino A, Nozaki T, Kurogi K, Yasumori T, Togashi K, Iwata H. A genetic analysis of meat compositions in Japanese Black cattle: Genetic parameters and sex influence. J Anim Breed Genet 2017; 134:373-382. [DOI: 10.1111/jbg.12280] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Accepted: 04/05/2017] [Indexed: 01/22/2023]
|
46
|
Takeda T, Iwatsuki S, Hamakawa T, Mizuno K, Kamiya H, Umemoto Y, Kubota H, Kubota Y, Sasaki S, Yasui T. Chromosomal anomalies and sperm retrieval outcomes of patients with non-obstructive azoospermia: a case series. Andrology 2017; 5:473-476. [DOI: 10.1111/andr.12338] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Revised: 12/06/2016] [Accepted: 01/16/2017] [Indexed: 11/26/2022]
|
47
|
Sakurai M, Yoshita K, Nakamura K, Miura K, Takamura T, Nagasawa SY, Morikawa Y, Kido T, Naruse Y, Nogawa K, Suwazono Y, Sasaki S, Ishizaki M, Nakagawa H. Skipping breakfast and 5-year changes in body mass index and waist circumference in Japanese men and women. Obes Sci Pract 2017; 3:162-170. [PMID: 28702211 PMCID: PMC5478803 DOI: 10.1002/osp4.106] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 03/06/2017] [Accepted: 03/11/2017] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE This study investigated the relationship between frequency of skipping breakfast and annual changes in body mass index (BMI) and waist circumference (WC). METHODS The participants were 4,430 factory employees. BMI and WC were measured repeatedly at annual medical examinations over a 5-year period. The association between frequency of skipping breakfast at the baseline examination and annual changes in anthropometric indices was evaluated using the generalized estimating equation method. RESULTS The mean (standard deviation) BMI was 23.3 (3.0) kg m-2 for men and 21.9 (3.6) kg m-2 for women; and the mean WC was 82.6 (8.7) cm for men and 77.8 (9.8) cm for women. During the follow-up period, mean BMI increased by 0.2 kg m-2 for men and women, and mean WC increased by 1.1 cm for men and 1.0 cm for women. The annual change in the BMI of men who skipped breakfast four to six times per week was 0.061 kg m-2 higher, and that of those who skipped breakfast seven times per week was 0.046 kg m-2 higher, compared with those who did not skip breakfast. Annual changes in the WC of male participants who skipped breakfast seven times per week was 0.248 cm higher than that of those who did not skip breakfast. Skipping breakfast was not associated with changes in BMI or WC in women. CONCLUSIONS Skipping breakfast was closely associated with annual changes in BMI and WC among men, and eating breakfast more than four times per week may prevent the excessive body weight gain associated with skipping breakfast.
Collapse
|
48
|
Nagai M, Dote K, Kato M, Sasaki S, Oda N. The right insular cortex infarction: a critical factor for mortality? Eur J Neurol 2017; 24:e11. [DOI: 10.1111/ene.13240] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2016] [Accepted: 11/30/2016] [Indexed: 11/29/2022]
|
49
|
Nakagami G, Mori M, Yoshida M, Kitamura A, Hayashi A, Miyagaki T, Sasaki S, Sugama J, Sanada H. Inter-rater and intra-rater reliability outcomes of a rapid bacteria counting system with pressure ulcer samples. J Wound Care 2017; 26:S27-S31. [DOI: 10.12968/jowc.2017.26.sup2.s27] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
50
|
Sasaki S, Watanabe J, Ohtaki H, Matsumoto M, Murai N, Nakamachi T, Hannibal J, Fahrenkrug J, Hashimoto H, Watanabe H, Sueki H, Honda K, Miyazaki A, Shioda S. Pituitary adenylate cyclase‐activating polypeptide promotes eccrine gland sweat secretion. Br J Dermatol 2017; 176:413-422. [DOI: 10.1111/bjd.14885] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/13/2016] [Indexed: 11/29/2022]
|