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Immune checkpoint inhibitors for POLE or POLD1 proofreading-deficient metastatic colorectal cancer. Ann Oncol 2024:S0923-7534(24)00104-2. [PMID: 38777726 DOI: 10.1016/j.annonc.2024.03.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 03/20/2024] [Accepted: 03/21/2024] [Indexed: 05/25/2024] Open
Abstract
BACKGROUND POLE and POLD1 proofreading deficiency (POLE/D1pd) define a rare subtype of ultramutated metastatic colorectal cancer (mCRC; over 100 mut/Mb). Disease-specific data about the activity and efficacy of immune checkpoint inhibitors (ICIs) in POLE/D1pd mCRC are lacking and it is unknown whether outcomes may be different from mismatch repair-deficient (dMMR)/microsatellite instability-high (MSI-H) mCRCs treated with ICIs. PATIENTS AND METHODS In this global study, we collected 27 patients with mCRC harboring POLE/D1 mutations leading to proofreading deficiency and treated with anti-programmed cell death-ligand 1 alone +/- anti-cytotoxic T-lymphocyte antigen-4 agents. We collected clinicopathological and genomic characteristics, response, and survival outcomes after ICIs of POLE/D1pd mCRC and compared them with a cohort of 610 dMMR/MSI-H mCRC patients treated with ICIs. Further genomic analyses were carried out in an independent cohort of 7241 CRCs to define POLE and POLD1pd molecular profiles and mutational signatures. RESULTS POLE/D1pd was associated with younger age, male sex, fewer RAS/BRAF driver mutations, and predominance of right-sided colon cancers. Patients with POLE/D1pd mCRC showed a significantly higher overall response rate (ORR) compared to dMMR/MSI-H mCRC (89% versus 54%; P = 0.01). After a median follow-up of 24.9 months (interquartile range: 11.3-43.0 months), patients with POLE/D1pd showed a significantly superior progression-free survival (PFS) compared to dMMR/MSI-H mCRC [hazard ratio (HR) = 0.24, 95% confidence interval (CI) 0.08-0.74, P = 0.01] and superior overall survival (OS) (HR = 0.38, 95% CI 0.12-1.18, P = 0.09). In multivariable analyses including the type of DNA repair defect, POLE/D1pd was associated with significantly improved PFS (HR = 0.17, 95% CI 0.04-0.69, P = 0.013) and OS (HR = 0.24, 95% CI 0.06-0.98, P = 0.047). Molecular profiling showed that POLE/D1pd tumors have higher tumor mutational burden (TMB). Responses were observed in both subtypes and were associated with the intensity of POLE/D1pd signature. CONCLUSIONS Patients with POLE/D1pd mCRC showed more favorable outcomes compared to dMMR/MSI-H mCRC to treatment with ICIs in terms of tumor response and survival.
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Epigenetic insight into effects of prenatal alcohol exposure on stress axis development: Systematic review with meta-analytic approaches. Alcohol Clin Exp Res 2023; 47:18-35. [PMID: 36341762 DOI: 10.1111/acer.14972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 10/26/2022] [Accepted: 11/02/2022] [Indexed: 11/09/2022]
Abstract
We conducted a systematic review with meta-analytic elements using publicly available Gene Expression Omnibus (GEO) datasets to determine the role of epigenetic mechanisms in prenatal alcohol exposure (PAE)-induced hypothalamic-pituitary-adrenal (HPA) axis dysfunctions in offspring. Several studies have demonstrated that PAE has long-term consequences on HPA axis functions in offspring. Some studies determined that alcohol-induced epigenetic alterations during fetal development persist in adulthood. However, additional research is needed to understand the major epigenetic events leading to alcohol-induced teratogenesis of the HPA axis. Our network analysis of GEO datasets identified key pathways relevant to alcohol-mediated histone modifications, DNA methylation, and miRNA involvement associated with PAE-induced alterations of the HPA axis. Our analysis indicated that PAE perturbated the epigenetic machinery to activate corticotrophin-releasing hormone, while it suppressed opioid, glucocorticoid receptor, and circadian clock genes. These results help to further our understanding of the epigenetic basis of alcohol's effects on HPA axis development.
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[Morbidity of extended pelvic lymphadenectomy during robot-assisted laparoscopic prostatectomy for localized cancer prostate]. Prog Urol 2022; 32:1455-1461. [PMID: 36088200 DOI: 10.1016/j.purol.2022.07.138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 07/02/2022] [Accepted: 07/18/2022] [Indexed: 11/30/2022]
Abstract
OBJECTIVES To assess the morbidity specific of extended pelvic lymphadenectomy during robot-assisted laparoscopic radical prostatectomy in a 8 year retrospective study. MATERIAL We carried out a single-center, single-surgeon retrospective study on 342 consecutive patients who underwent a robot-assisted laparoscopic radical prostatectomy and extended pelvic lymphadenectomy, from July 2010 to March 2018. Postoperative complications were recorded up to 3 months after the operation. RESULTS Thirty (8.8%) patients had at least one complication related to lymphadenectomy including 1 vascular injury (0.3%), 7 injuries of the obturator nerve (2%), 5 venous thromboembolic complications (1.5%) including 4 pulmonary embolisms, 10 symptomatic lymphoceles (2.9%) and 8 lymphoedemas (2.3%). Of these complications, 13 were classified Clavien 1 (43.3%), 8 Clavien 2 (26.7%), 7 Clavien 3a (23.3%) and 2 Clavien 3b (6.7%). In univariate analysis a high age (P=0.04), high BMI (P<0.01) and pT stage (P=0.02) were significantly associated with complication whereas in multivariate analysis, only age (P=0.02) and BMI (P<0.01) lived were. In univariate analysis high BMI (P=0.04) and lymph node involvement (P=0.04) were associated with lymphatic complication. We did not find any other specific risk factor for the other complications. CONCLUSION With 8.8% of overall complications related to lymphadenectomy and 5% of complication classified Clavien grade 2 or higher, extended pelvic lymphadenectomy was not very morbid. Age and BMI were risk factors for a overall complication. BMI and lymph node involvement were risk factors for lymphatic complications. LEVEL OF PROOF 4.
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Abstract 1523: Beta-2 adrenergic receptor and mu opioid receptor interact to increase the aggressiveness in triple negative breast cancer cells through activation of GSK3 signaling. Cancer Res 2022. [DOI: 10.1158/1538-7445.am2022-1523] [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
Breast cancer is the world’s leading cause of cancer mortality in women worldwide. It has been shown that body stress hormones, such as norepinephrine, and opioid peptides interact to control the growth and progression of this cancer. Opioid and beta-adrenergic receptors are recently shown to cross talk via formation of receptor heterodimers to control cellular functions in various cell systems. However, the underlying cell signaling mechanism remains unclear. To determine the effect of the interaction of the two systems in breast cancer, we employed triple-negative breast cancer (TNBC) cell lines MDA-MB-231 and MDA-MB-468, CRISPR, chemical inhibition or activation and, PCR Array technology to study aggressive tumor phenotype and signaling cascades. We found that knock down of the beta-adrenergic (B2AR) or mu-opioidergic receptor (MOR) system via the CRISPR technique or pharmacological agents induces a less aggressive phenotype in triple negative breast cancer cells both in vitro and in vivo, with the effect being potentiated when both receptor systems were inhibited together. The mRNA expression study using a PCR Array targeting Cancer Stem Cell genes shows that B2AR or MOR activated the glycogen synthase kinase 3 (GSK3) signaling cascade. The GSK3 inactivation in MDA-MB-231 and MDA-MB-468 cells induced similar phenotypic changes as was done by the inhibition of B2AR and/or MOR, while a GSK3 activation by wortmannin reversed the effects of B2AR and/or MOR knockdown on these cells. GSK3 inactivation also prevents B2AR agonist norepinephrine or MOR agonist DAMGO from affecting MDA-MB-231 and MDA-MB-468 cell proliferation. These data identify a role of B2AR and MOR interaction in the control of breast cancer cell growth and establish a possible role of the GSK3 signaling system in mediation of these two receptors’ cross talk. (Supported by NIH grant R01 CA20863201).
Citation Format: Bénédicte Rousseau, Sengottuvelan Murugan, Ajay Palagani, Dipak K. Sarkar. Beta-2 adrenergic receptor and mu opioid receptor interact to increase the aggressiveness in triple negative breast cancer cells through activation of GSK3 signaling [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2022; 2022 Apr 8-13. Philadelphia (PA): AACR; Cancer Res 2022;82(12_Suppl):Abstract nr 1523.
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SO-20 Stanniocalcin 1 (STC1) in patients with refractory colorectal cancer (CRC) treated with regorafenib: An exploratory analysis of the CORRECT trial. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.04.419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Beta 2 adrenergic receptor and mu opioid receptor interact to potentiate the aggressiveness of human breast cancer cell by activating the glycogen synthase kinase 3 signaling. Breast Cancer Res 2022; 24:33. [PMID: 35568869 PMCID: PMC9107672 DOI: 10.1186/s13058-022-01526-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 04/20/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Opioid and beta-adrenergic receptors are recently shown to cross talk via formation of receptor heterodimers to control the growth and proliferation of breast cancer cells. However, the underlying cell signaling mechanism remained unclear. METHODS To determine the effect of the interaction of the two systems in breast cancer, we employed triple-negative breast cancer cell lines MDA-MB-231 and MDA-MB-468, CRISPR or chemical inhibition or activation of beta-adrenergic receptors (B2AR) and mu-opioid receptors (MOR) gene, and PCR array technology and studied aggressive tumor phenotype and signaling cascades. RESULTS We show here that in triple-negative breast cancer cells, the reduction in expression B2AR and MOR by genetic and pharmacological tools leads to a less aggressive phenotype of triple-negative breast cancer cells in vitro and in animal xenografts. Genomic analysis indicates the glycogen synthase kinase 3 (GSK3) pathway as a possible candidate messenger system involved in B2AR and MOR cross talk. GSK3 inactivation in MDA-MB-231 and MDA-MB-468 cells induced similar phenotypic changes as the inhibition of B2AR and/or MOR, while a GSK3 activation by wortmannin reversed the effects of B2AR and/or MOR knockdown on these cells. GSK3 inactivation also prevents B2AR agonist norepinephrine or MOR agonist DAMGO from affecting MDA-MB-231 and MDA-MB-468 cell proliferation. CONCLUSIONS These data confirm a role of B2AR and MOR interaction in the control of breast cancer cell growth and identify a possible role of the GSK3 signaling system in mediation of these two receptors' cross talk. Screening for ligands targeting B2AR and MOR interaction and/or the GSK3 system may help to identify novel drugs for the prevention of triple-negative breast cancer cell growth and metastasis.
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A French community-based intervention for parents of French-Canadian children with behavior problems: The EQUIPE program. Encephale 2022; 49:211-218. [DOI: 10.1016/j.encep.2021.12.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 12/09/2021] [Indexed: 11/28/2022]
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Spleen route accelerates engraftment of human hematopoietic stem cells. Biochem Biophys Res Commun 2021; 569:23-28. [PMID: 34216994 DOI: 10.1016/j.bbrc.2021.06.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 06/11/2021] [Accepted: 06/16/2021] [Indexed: 10/21/2022]
Abstract
Intravenous injections of human hematopoietic stem cells (hHSCs) is routinely used in clinic and for modeling hematopoiesis in mice. However, unspecific dilution in vascular system and non-hematopoietic organs challenges engraftment efficiency. Although spleen is capable of extra medullar hematopoiesis, its ability to support human HSC transplantation has never been evaluated. We demonstrate that intra-splenic injection results in high and sustained engraftment of hHSCs into immune-deficient mice, with higher chimerisms than with intravenous or intra-femoral injections. Our results support that spleen microenvironment provides a niche for HSCs amplification and offers a new route for efficient HSC transplantation.
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TMB cut-offs fail to predict benefit of PD-1 blockade in gastroesophageal adenocarcinoma in KEYNOTE-061. Ann Oncol 2021; 32:1188-1189. [PMID: 34139271 DOI: 10.1016/j.annonc.2021.06.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 06/09/2021] [Indexed: 12/12/2022] Open
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Correction of the VIR-visible dataset from the Dawn mission at Vesta. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2020; 91:123102. [PMID: 33379964 DOI: 10.1063/5.0022902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 11/15/2020] [Indexed: 06/12/2023]
Abstract
This work describes the correction method applied to the dataset acquired at the asteroid (4) Vesta by the visible channel of the visible and infrared mapping spectrometer. The rising detector temperature during data acquisitions in the visible wavelengths leads to a spectral slope increase over the whole spectral range. This limits the accuracy of the studies of the Vesta surface in this wavelength range. Here, we detail an empirical method to correct for the visible detector temperature dependency while taking into account the specificity of the Vesta dataset.
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Corrigendum to “Tritium retention in w plasma-facing materials: Impact of the material structure and helium irradiation” [Nucl. Mater. Energy 2019; 19: 403–410]. NUCLEAR MATERIALS AND ENERGY 2020. [DOI: 10.1016/j.nme.2020.100729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Correction of the VIR-visible data set from the Dawn mission. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2019; 90:123110. [PMID: 31893819 DOI: 10.1063/1.5123362] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 11/24/2019] [Indexed: 06/10/2023]
Abstract
Data acquired at Ceres by the visible channel of the Visible and InfraRed mapping spectrometer (VIR) on board the NASA Dawn spacecraft are affected by the temperatures of both the visible (VIS) and the infrared (IR) sensors, which are, respectively, a charged coupled device and a HgCdTe array. The variations of the visible channel temperatures measured during the sessions of acquisitions are correlated with the variations in the spectral slope and shape for all the mission phases. The IR channel temperature is more stable during the acquisitions; nonetheless, it is characterized by a bimodal distribution whether the cryocooler (and, therefore, the IR channel) is used or not during the visible channel operations. When the infrared channel temperature is high (175 K, i.e., not in use and with the cryocooler off), an additional negative slope and a distortion are observed in the spectra of the visible channel. We developed an empirical correction based on a reference spectrum for the whole dataset; it is designed to correct the two issues related to the sensor temperatures that we have identified. The reference spectrum is calculated to be representative of the global Ceres' surface. It is also made of the data acquired when the visible and infrared channel temperatures are equal to the ones measured during an observation of the Arcturus star by VIR, which is consistent with several ground-based observations. The developed correction allows reliable analysis and mapping to be performed by minimizing the artifacts induced by fluctuations of the VIS temperature. Thanks to this correction, a direct comparison between different mission phases during which the VIR experienced different visible and infrared channel temperatures is now possible.
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Impact of the IDEA study on clinical practice for stage III colon cancer patients: A French GERCOR - FFCD - GI UNICANCER national survey. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz246.032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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European Space Agency experiments on thermodiffusion of fluid mixtures in space. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2019; 42:86. [PMID: 31289962 DOI: 10.1140/epje/i2019-11849-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 06/05/2019] [Indexed: 06/09/2023]
Abstract
This paper describes the European Space Agency (ESA) experiments devoted to study thermodiffusion of fluid mixtures in microgravity environment, where sedimentation and convection do not affect the mass flow induced by the Soret effect. First, the experiments performed on binary mixtures in the IVIDIL and GRADFLEX experiments are described. Then, further experiments on ternary mixtures and complex fluids performed in DCMIX and planned to be performed in the context of the NEUF-DIX project are presented. Finally, multi-component mixtures studied in the SCCO project are detailed.
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BRAF mutation is not associated with an increased risk of recurrence in patients undergoing resection of colorectal liver metastases. Br J Surg 2019; 106:1237-1247. [PMID: 31183866 DOI: 10.1002/bjs.11180] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 02/15/2019] [Accepted: 02/18/2019] [Indexed: 12/17/2022]
Abstract
BACKGROUND BRAF mutation is associated with a poor prognosis in patients with metastatic colorectal cancer. For patients with resectable colorectal liver metastases (CRLMs), the prognostic impact of BRAF mutation is unknown and the benefit of surgery debated. This nationwide intergroup (ACHBT, FRENCH, AGEO) study aimed to evaluate the oncological outcome of patients undergoing liver resection for BRAF-mutated CRLMs. METHODS The study included patients who underwent resection for BRAF-mutated CRLMs in 24 centres between 2012 and 2016. A case-matched comparison was made with 183 patients who underwent resection of CRLMs with wild-type BRAF during the same interval. RESULTS Sixty-six patients who underwent resection for BRAF-mutated CRLMs in 24 centres were compared with 183 patients with wild-type BRAF. The 1- and 3-year disease-free survival (DFS) rates were 46 and 19 per cent for the BRAF-mutated group, and 55·4 and 27·8 per cent for the group with wild-type BRAF (P = 0·430). In multivariable analysis, BRAF mutation was not associated with worse DFS (hazard ratio 1·16, 95 per cent c.i. 0·72 to 1·85; P = 0·547). The 1- and 3-year overall survival rates after surgery were 94 and 54 per cent respectively among patients with BRAF mutation, and 95·8 and 82·9 per cent in those with wild-type BRAF (P = 0·004). Median survival after disease progression was 23·0 (95 per cent c.i. 11·0 to 35·0) months among patients with mutated BRAF and 44·3 (35·9 to 52·6) months in those with wild-type BRAF (P = 0·050). Multisite disease progression was more common in the BRAF-mutated group (48 versus 29·8 per cent; P = 0·034). CONCLUSION These results support surgical treatment for resectable BRAF-mutated CRLM, as BRAF mutation by itself does not increase the risk of relapse after resection. BRAF mutation is associated with worse survival in patients whose disease relapses after resection of CRLM, as for non-metastatic colorectal cancer.
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Tritium retention in W plasma-facing materials: Impact of the material structure and helium irradiation. NUCLEAR MATERIALS AND ENERGY 2019. [DOI: 10.1016/j.nme.2019.03.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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OC-0266 Pancreatic ductal adenocarcinoma sensitization to radiotherapy by bioactive food components. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)30686-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Suivi à long terme après prostatectomie et curage ganglionnaire étendu d’une cohorte de patient atteint d’un cancer de prostate localisé avec envahissement ganglionnaire : intérêt du curage ? Prog Urol 2018. [DOI: 10.1016/j.purol.2018.07.072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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PO-446 Anti-tumour efficiency of 20A, a novel G-quadruplex ligand, in in vitro and in vivocancer models: ATM and autophagy interplay. ESMO Open 2018. [DOI: 10.1136/esmoopen-2018-eacr25.469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Molecular simulation of the water-triolein-oleic acid mixture: Local structure and thermodynamic properties. J Chem Phys 2018; 148:184702. [DOI: 10.1063/1.5021753] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Adjuvant chemoradiation for gastric carcinoma: State of the art and perspectives. Clin Transl Radiat Oncol 2018; 10:13-22. [PMID: 29928701 PMCID: PMC6008627 DOI: 10.1016/j.ctro.2018.02.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 02/27/2018] [Accepted: 02/27/2018] [Indexed: 02/07/2023] Open
Abstract
An estimated 990,000 new cases of gastric cancer are diagnosed worldwide each year. Surgical excision, the only chance for prolonged survival, is feasible in about 20% of cases. Even after surgery, the median survival is limited to 12 to 20 months due to the frequency of locoregional and/or metastatic recurrences. This led to clinical trials associating surgery with neoadjuvant or adjuvant treatments to improve tumor control and patient survival. The most studied modalities are perioperative chemotherapy and adjuvant chemoradiotherapy. To date, evidence has shown a survival benefit for postoperative chemoradiotherapy and for perioperative chemotherapy. Phase III trials are ongoing to compare these two modalities. The aim of this review is to synthesize current knowledge about adjuvant chemoradiotherapy in the management of gastric adenocarcinoma, and to consider its prospects by integrating modern radiotherapy techniques.
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Key Words
- 5FU, 5-fluorouracil
- 5FU-LV, 5-fluorouracil leucovorin
- Adenocarcinoma
- Adjuvant therapy
- CRT, chemoradiotherapy
- CT, chemotherapy
- Chemoradiotherapy
- DCF, Doxorubicin Cisplatin 5-fluorouracil
- ECF, Epirubicin Cisplatin 5-fluorouracil
- ECX, Epirubicin Cisplatin Capecitabin
- FOLFOX, 5-fluorouracil oxaliplatin
- FUFOL, bolus 5-fluorouracil followed by leucovorin over 15 minutes
- Gastric cancer
- IMRT
- IMRT, intensity modulated radiation therapy
- LV, leucovorin
- RT, radiation therapy
- XELOX, capecitabin oxaliplatine
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ID: 1023 All-trans retinoic acid targets gastric cancer stem cells and inhibits patient-derived gastric carcinoma tumor growth. BIOMEDICAL RESEARCH AND THERAPY 2017. [DOI: 10.15419/bmrat.v4is.301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Gastric carcinoma is the third leading cause of cancer-related death worldwide. This cancer, most of the time metastatic, is essentially treated by surgery associated with conventional chemotherapy, and has a poor prognosis. The existence of cancer stem cells (CSC) expressing CD44 and a high aldehyde dehydrogenase (ALDH) activity has recently been demonstrated in gastric carcinoma and has opened new perspectives to develop targeted therapy. In this study, we evaluated the effects of all-transretinoic acid (ATRA) on CSCs in human gastric carcinoma. ATRA effects were evaluated on the proliferation and tumorigenic properties of gastric carcinoma cells from patient-derived tumors and cell lines in conventional 2D cultures, in 3D culture systems (tumorsphere assay) and in mouse xenograft models. ATRA inhibited both tumorspheres initiation and growth in vitro, which was associated with a cell-cycle arrest through the upregulation of cyclin-dependent kinase (CDK) inhibitors and the downregulation of
cell-cycle progression activators. More importantly, ATRA downregulated the expression of the CSC markers CD44 and ALDH as well as stemness genes such as Klf4 and Sox2 and induced differentiation of tumorspheres. Finally, 2 weeks of daily ATRA treatment were sufficient to inhibit gastric tumor progression in vivo, which was associated with a decrease in CD44, ALDH1, Ki67 and PCNA expression in the remaining tumor cells. Administration of ATRA appears to be a potent strategy to efficiently inhibit tumor growth and more importantly to target gastric CSCs in both intestinal and diffuse types of gastric carcinoma.
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Potential drug interactions in older patients with cancer: Updated data from the ELCAPA cohort survey. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx388.043] [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
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Feasibility and barriers to optimal oncological treatment in solid organ transplant patients with de novo cancer. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx385.021] [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
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Computation of elastic constants of solids using molecular simulation: comparison of constant volume and constant pressure ensemble methods. MOLECULAR SIMULATION 2017. [DOI: 10.1080/08927022.2017.1313418] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Discovery of Novel (Imidazo[1,2-a]pyrazin-6-yl)ureas as Antiproliferative Agents Targeting P53 in Non-small Cell Lung Cancer Cell Lines. Anticancer Res 2016; 36:1621-1630. [PMID: 27069139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 03/15/2016] [Indexed: 06/05/2023]
Abstract
A series of (imidazo[1,2-a]pyrazin-6-yl)ureas were synthesized through 6-aminoimidazo[1,2-a]pyrazine as a key intermediate. 1-(Imidazo[1,2-a]pyrazin-6-yl)-3-(4-methoxy - phenyl)urea displayed a cytostatic activity against a non-small cell lung cancer cell line and was chosen for further mechanistic studies. Growth kinetics highlighted a selective dose-dependent response of P53-mutant NSCLC-N6-L16 cell line and overexpression of TP53 gene induced by this compound. These pharmacological data suggest a promising reactivation of p53 mutant in NSCLC-N6-L16 cell line.
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Évaluation du « Quadrella » a 2ans : nouvel indice de performance oncologique et fonctionnelle spécifique de la curiethérapie prostatique. Prog Urol 2015; 25:836-7. [DOI: 10.1016/j.purol.2015.08.242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Assessment of respiratory toxicity of ITER-like tungsten metal nanoparticles using an in vitro 3D human airway epithelium model. Toxicol Lett 2015. [DOI: 10.1016/j.toxlet.2015.08.519] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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TP53 transcription factor for the NEDD9/HEF1/Cas-L gene: potential targets in Non-Small Cell Lung Cancer treatment. Sci Rep 2015; 5:10356. [PMID: 26011298 PMCID: PMC4443767 DOI: 10.1038/srep10356] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Accepted: 04/09/2015] [Indexed: 01/16/2023] Open
Abstract
Lung cancer is a serious public health problem. Although there has been significant progress in chemotherapy, non-small cell lung cancer is still resistant to current treatments, primarily because of the slow rate of cell development. It is thus important to find new molecules directed against targets other than proliferation agents. Considering the high proportion of mutant proteins in tumor cells, and the high rate of mutation of the TP53 gene in all cancers, and in NSCLC in particular, this gene is a perfect target. Certain new molecules have been shown to restore the activity of mutated p53 protein, for example PRIMA-1, which reactivates the His273 mutant p53. In a previous study, we presented triazine A190, a molecule with a cytostatic activity that blocks cells in the G1 phase and induces apoptosis. Here, we show that A190 not only restores mutant p53 activity, but also induces an overexpression of the NEDD9 gene, leading to apoptotic death. These findings might offer hope for the development of new targeted therapies, specific to tumor cells, which spare healthy cells.
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Abstract
A biosensor for bimodal detection of recombinant Cys-tagged proteins via fluorescence and hyperpolarized 129Xe NMR is presented. Interaction with a peptide containing the motif Cys–Cys–X–X–Cys–Cys activates both fluorescence and NMR responses.
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Classical force field for hydrofluorocarbon molecular simulations. Application to the study of gas solubility in poly(vinylidene fluoride). J Phys Chem A 2014; 119:140-51. [PMID: 25479370 DOI: 10.1021/jp506895p] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A classical all-atoms force field for molecular simulations of hydrofluorocarbons (HFCs) has been developed. Lennard-Jones force centers plus point charges are used to represent dispersion-repulsion and electrostatic interactions. Parametrization of this force field has been performed iteratively using three target properties of pentafluorobutane: the quantum energy of an isolated molecule, the dielectric constant in the liquid phase, and the compressed liquid density. The accuracy and transferability of this new force field has been demonstrated through the simulation of different thermophysical properties of several fluorinated compounds, showing significant improvements compared to existing models. This new force field has been applied to study solubilities of several gases in poly(vinylidene fluoride) (PVDF) above the melting temperature of this polymer. The solubility of CH4, CO2, H2S, H2, N2, O2, and H2O at infinite dilution has been computed using test particle insertions in the course of a NpT hybrid Monte Carlo simulation. For CH4, CO2, and their mixtures, some calculations beyond the Henry regime have also been performed using hybrid Monte Carlo simulations in the osmotic ensemble, allowing both swelling and solubility determination. An ideal mixing behavior is observed, with identical solubility coefficients in the mixtures and in pure gas systems.
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Photo-vaporisation prostatique à minima au laser Greenlight en préparation à la curiethérapie : faisabilité technique et morbidité urinaire. Prog Urol 2014; 24:860-1. [DOI: 10.1016/j.purol.2014.08.170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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34
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From policy making to service use. Down's syndrome antenatal screening in England, France and the Netherlands. Soc Sci Med 2014; 106:67-74. [DOI: 10.1016/j.socscimed.2014.01.046] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Revised: 01/20/2014] [Accepted: 01/24/2014] [Indexed: 10/25/2022]
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Screening and discovery of nitro-benzoxadiazole compounds activating epidermal growth factor receptor (EGFR) in cancer cells. Sci Rep 2014; 4:3977. [PMID: 24496106 PMCID: PMC3913914 DOI: 10.1038/srep03977] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Accepted: 01/13/2014] [Indexed: 12/13/2022] Open
Abstract
Peptide ligand-induced dimerization of the extracellular region of the epidermal growth factor receptor (sEGFR) is central to the signal transduction of many cellular processes. A small molecule microarray screen has been developed to search for non-peptide compounds able to bind to sEGFR. We describe the discovery of nitro-benzoxadiazole (NBD) compounds that enhance tyrosine phosphorylation of EGFR and thereby trigger downstream signaling pathways and other receptor tyrosine kinases in cancer cells. The protein phosphorylation profile in cells exposed to NBD compounds is to some extent reminiscent of the profile induced by the cognate ligand. Experimental studies indicate that the small compounds bind to the dimerization domain of sEGFR, and generate stable dimers providing allosteric activation of the receptor. Moreover, receptor phosphorylation is associated with inhibition of PTP-1B phosphatase. Our data offer a promising paradigm for investigating new aspects of signal transduction mediated by EGFR in cancer cells exposed to electrophilic NBD compounds.
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Comparaison de la morbidité entre curage étendu et curage limité au cours de la prostatectomie radicale laparoscopique. Prog Urol 2014; 24:114-20. [DOI: 10.1016/j.purol.2013.07.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2013] [Revised: 07/25/2013] [Accepted: 07/29/2013] [Indexed: 11/29/2022]
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37
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Thermal diffusion in simple liquid mixtures: what have we learnt from molecular dynamics simulations? Mol Phys 2013. [DOI: 10.1080/00268976.2013.837534] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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38
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Évolution de la fonction érectile après curiethérapie prostatique à l’iode 125 pour tumeur localisée de faible risque : étude prospective chez des patients ayant un score IIEF5 initial>16. Prog Urol 2013. [DOI: 10.1016/j.purol.2013.08.103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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39
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Curage ganglionnaire étendu dans le cancer de prostate : complications lymphatiques en fonction des limites anatomiques du curage. Prog Urol 2013. [DOI: 10.1016/j.purol.2013.08.188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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40
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Évaluation des performances selon le niveau d’expérience sur le simulateur de photovaporisation laser GreenLight Sim : étude préliminaire. Prog Urol 2013. [DOI: 10.1016/j.purol.2013.08.155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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41
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Évaluation instrumentale des ruptures du ligament croisé antérieur. Ann Phys Rehabil Med 2013. [DOI: 10.1016/j.rehab.2013.07.577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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42
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Funding of PRM activity in France. Ann Phys Rehabil Med 2013. [DOI: 10.1016/j.rehab.2013.07.664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Interfacial tension in oil–water–surfactant systems: On the role of intra-molecular forces on interfacial tension values using DPD simulations. J Chem Phys 2013; 138:144102. [DOI: 10.1063/1.4799888] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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45
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On the rational formulation of alternative fuels: melting point and net heat of combustion predictions for fuel compounds using machine learning methods. SAR AND QSAR IN ENVIRONMENTAL RESEARCH 2013; 24:259-277. [PMID: 23574496 DOI: 10.1080/1062936x.2013.766634] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We report the development of predictive models for two fuel specifications: melting points (T(m)) and net heat of combustion (Δ(c)H). Compounds inside the scope of these models are those likely to be found in alternative fuels, i.e. hydrocarbons, alcohols and esters. Experimental T(m) and Δ(c)H values for these types of molecules have been gathered to generate a unique database. Various quantitative structure-property relationship (QSPR) approaches have been used to build models, ranging from methods leading to multi-linear models such as genetic function approximation (GFA), or partial least squares (PLS) to those leading to non-linear models such as feed-forward artificial neural networks (FFANN), general regression neural networks (GRNN), support vector machines (SVM), or graph machines. Except for the case of the graph machines method for which the only inputs are SMILES formulae, previously listed approaches working on molecular descriptors and functional group count descriptors were used to develop specific models for T(m) and Δ(c)H. For each property, the predictive models return slightly different responses for each molecular structure. Therefore, models labelled as 'consensus models' were built by averaging values computed with selected individual models. Predicted results were then compared with experimental data and with predictions of models in the literature.
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Conséquences sexuelles du traitement de l’hyperplasie bénigne de prostate (HBP) par laser greenlight™ XPS (180w). Prog Urol 2012. [DOI: 10.1016/j.purol.2012.08.174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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47
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[Urinary continence following laparoscopic radical prostatectomy: qualitative analysis]. Prog Urol 2012; 22:945-53. [PMID: 23102017 DOI: 10.1016/j.purol.2012.07.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2012] [Revised: 07/06/2012] [Accepted: 07/11/2012] [Indexed: 10/27/2022]
Abstract
PURPOSE The main purpose of this study was to report urinary continence after laparoscopic radical prostatectomy (LRP) for localised prostate cancer and the return to baseline rate for urinary continence. The minor purpose was to determine the risk factors, which influence return to baseline urinary continence after radical prostatectomy. METHODS Prospective evaluation of urinary continence with self-administered questionnaire in 300 consecutive LRP for localized prostate cancer. RESULTS After LRP, at 3, 6 and 12 months, respectively 12.5%, 23% and 33.7% of patients recover baseline urinary continence. Fifty-four percent, 72.3% and 78.4% of patients did not wear pads 3, 6 and 12 months after LRP. In patients without pad, 43 % recovered baseline continence one year after radical prostatectomy. In univariate analysis, age older than 60 years (P=0.003, P=0.003, P=0.02, 3, 6 and 12 months after LRP) and no sparing of neurovascular bundles (P=0.01, P=0.08 at 3 and 6 months after LRP) were risks factors of urinary incontinence. In multivariate analysis, only age older than 60 years (P=0.018, P=0.01 and P=0.01 at 3, 6 and 12 months after LRP) was a risk factor of urinary incontinence. CONCLUSION One year after LRP, 66.3% of patients had urinary incontinence according to our evaluation using stringent criteria, i.e. return to baseline continence status. However, only 21.6% of patients wore pads and less than 2% wore more than two pads per day.
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P008 Intérêt d’un questionnaire calcique court en pratique clinique quotidienne. NUTR CLIN METAB 2011. [DOI: 10.1016/s0985-0562(11)70076-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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49
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Fields of competence opened by recent French regulations. Ann Phys Rehabil Med 2011. [DOI: 10.1016/j.rehab.2011.07.225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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50
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FOLFIRI regimen as second-/third-line chemotherapy in patients with advanced pancreatic adenocarcinoma refractory to gemcitabine and platinum salts: A retrospective series of 70 patients. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.4132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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