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Bevacizumab + Triplet Treatment for Untreated With Chemotherapy Metastatic Colorectal Cancer

ABSTRACT: The purpose of this study is to evaluate the efficacy and safety of fluorouracil (5-FU), levofolinate calcium (l-LV), oxaliplatin (L-OHP) and irinotecan hydrochloride hydrate (CPT-11) (FOLFOXIRI) plus bevacizumab in untreated metastatic colorectal cancer patients who harbor Uridine diphosphate (UDP)-glucuronosyl transferase 1A1 (UGT1A1) *1/*1, *1/*6 or *1/*28.

DISEASE(S): Metastatic Colorectal Cancer,Patients With Metastatic Colorectal Cancer,Colorectal Neoplasms

PROVIDER: 2194080 | ecrin-mdr-crc |

REPOSITORIES: ECRIN MDR

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Untreated vs. Camptothecin Treated HeLa cells

Project description:Pharmacogenomic identification of targets for adjuvant therapy with the topoisomerase poison camptothecin. The response of tumor cells to the unusual form of DNA damage caused by topoisomerase poisons such as camptothecin (CPT) is poorly understood, and knowledge regarding which drugs can be effectively combined with CPT is lacking. To better understand the response of tumor cells to CPT and to identify potential targets for adjuvant therapy, we examined global changes in mRNA abundance in HeLa cells after CPT treatment using Affymetrix U133A GeneChips, which include all annotated human genes (22,283 probe sets). Statistical analysis of the data using a Bayesian/Cyber t test and a modified Benjamini and Hochberg correction for multiple hypotheses testing identified 188 probe sets that are induced and 495 that are repressed 8 h after CPT treatment at a False Discovery Rate of <0.05 and a minimum 3-fold change. This pharmacogenomic approach led us to identify two pathways that are CPT induced: (a) the epidermal growth factor receptor; and (b) nuclear factor-kappaB-regulated antiapoptotic factors. Experiments using HeLa cells in our lab and prior animal model studies performed elsewhere confirm that inhibitors of these respective pathways super-additively enhance CPT's cytotoxicity, suggesting their potential as targets for adjuvant therapy with CPT. Cancer Res. 2004 Mar 15;64(6):2096-104 Keywords = HeLa Keywords = Camptothecin Keywords: ordered

2004-05-18 | GSE1417 | GEO

RNA-seq of U2OS treated with Harmine or INDY and their controls

Project description:RNA-seq was applied for identifying the change of transcriptome between U2OS cells with starvation-induced quiescence treated with Harmine Hydrochloride or INDY and the untreated controls.

2023-02-01 | GSE168401 | GEO

Transcriptome analysis of novel CPT-CEF-treated HT29 colon cancer cells to evaluate drug cytotoxicity

Project description:Purpose: To identify differentially expressed genes in HT29 colon cancer cells after treatment with a novel formulation of camptothecin with β-cyclodextrin-EDTA-Fe3O4 nanoparticle-conjugated nanocarriers (CPT-CEF) Methods:Treated HT29 cell lines with CPT-CEF, isolated total RNA from HT29 colon cancer cells, and prepared library for RNA sequencing. Carried out comparative transcriptomic studies between treated and untreated cells to find out which gene functions were dysregulated by CPT-CEF. Results: The study yielded 247 DEGs ((FDR<0.05, FC>2.0) that were affected by CPT-CEF treatment in the HT29 colon cancer cells. The results obtained from cell cycle analysis, mitochondrial depolarization assay and acridium orange/propidium iodide double staining showed potential of CPT-CEF in cancer cell inhibition. Conclusion: Our study successfully identified DEGs in the CPT-CEF treated HT29 colon cancer cells that pointed to inhibition of cancer progression. To further affirm, animal studies are needed.

2021-09-15 | GSE165875 | GEO

A feasibility study of Irinotecan (CPT-11) by groups of Uridine diphosphate glucuronosyltransferase 1A1 (UGT1A1) polymorphisms in patients with metastatic colorectal cancer.

Project description:Interventions: Patients receive FOLFIRI with bevacizumab fixed 5mg/kg. (Treatment will be continued unless the disease progression, unacceptable toxicity, or consent withdrawal.) Definision of UGT1A1 polymorphisms groups: The homozygous group is patient with homozygous genotype of UGT1A1*28/*28 or UGT1A1*6/*6, with combined heterozygous genotypes of UGT1A1*28 and UGT1A1*6. The heterozygous group is patient with heterozygous genotype of either UGT1A1*28 or UGT1A1*6. The wild group is patients with no UGT1A1*28 and UGT1A1*6 mutation. CPT-11 dosage is wild and heterozygous:CPT-11 150mg/m2 homozygous:CPT-11 100mg/m2 Primary outcome(s): 1)incidence of adverse events 2)frequency of severe toxicity Study Design: Single arm Non-randomized

| 2620216 | ecrin-mdr-crc

A genotype directed dose-finding study of Irinotecan (CPT-11) by groups of Uridine diphosphate glucuronosyltransferase 1A1 (UGT1A1) polymorphisms in patients with advanced metastatic colorectal cancer and gastric cancer.

Project description:Interventions: Administraion of CPT-11 is twice for 4 weeks on days 1 and 15. CPT-11 is reconstituted in >=250 mL of normal saline or 5% dextrose in water and infuse 90min on day 1 for pharmacokinetics, and 90min over on day15. CPT-11 adjusted dosage is determined from 50,75,100,125 or 150mg/sqm in the heterozygous group and the homozygous group by continual reassessment method. CPT-11 dosage is fixed at 150mg/sqm in the wild group.Definision of UGT1A1 polymorphisms groups: The homozygous group is patient with homozygous genotype of UGT1A1*28/*28 or UGT1A1*6/*6, with combined heterozygous genotypes of UGT1A1*28 and UGT1A1*6. The heterozygous group is patient with heterozygous genotype of either UGT1A1*28 or UGT1A1*6. The wild group is patients with no UGT1A1*28 and UGT1A1*6 mutation. Primary outcome(s): Maximum tolerated dose for the heterozygous group and the homozygous group, respectively. Incidence rate of dose limiting toxicities for the wild group. Study Design: Single arm Non-randomized

| 2616019 | ecrin-mdr-crc

Triclosan administration to humanized UDP-glucuronosyltransferase 1 neonatal mice induces UGT1A1 through a dependence on PPARα and ATF4

Project description:Triclosan (TCS) is an antimicrobial toxicant found in a myriad of consumer products and has been detected in human tissues, including breastmilk. We have evaluated the impact of lactational TCS on UDP-glucuronosyltransferase 1A1 (UGT1A1) expression and bilirubin metabolism in humanized UGT1 (hUGT1) neonatal mice. In hUGT1 mice, expression of the hepatic UGT1A1 gene is developmentally delayed resulting in elevated total serum bilirubin (TSB) levels. We found that newborn hUGT1 mice breastfed or orally treated with TCS presented lower TSB levels along with induction of hepatic UGT1A1. Lactational and oral treatment by gavage with TCS leads to the activation of hepatic nuclear receptors CAR, PPARα, and stress sensor, ATF4. When CAR-deficient hUGT1 mice (hUGT1/Car-/-) were treated with TCS, TSB levels were reduced with a robust induction of hepatic UGT1A1, leaving us to conclude that CAR is not tied to UGT1A1 induction. Alternatively, when PPAR-deficient hUGT1 mice (hUGT1/Ppar-/-) were treated with TCS, hepatic UGT1A1 was not induced. Additionally, we had previously demonstrated that TCS is a potent inducer of ATF4, a transcriptional factor linked to the integrated stress response. When ATF4 was deleted in liver of hUGT1 mice (hUGT1/Atf4∆Hep), and these mice treated with TCS, we observed superinduction of hepatic UGT1A1. Oxidative stress genes in livers of hUGT1/Atf4∆Hep treated with TCS were increased, suggesting that ATF4 protects liver from excessive oxidative stress. The increase oxidative stress may be associated with superinduction of UGT1A1. The expression of ATF4 in neonatal hUGT1 hepatic tissue may play a role in the developmental repression of UGT1A1.

2024-04-24 | GSE264293 | GEO

GaST-seq untreated leaf

Project description:GaST-seq spatial transcriptomics untreated leaf

| PRJEB31314 | ENA

Transcription profiling of Zea mays embryos under camptothecin (CPT) treatment.

Project description:Camptothecin (CPT) is a plant alkaloid that specifically binds topoisomerase I (Topo I) inhibiting its activity and inducing double stranded breaks in the DNA, activating the genotoxic cell responses, and ultimately, it might trigger programmed cell death (PCD). We used microarrays to detail the changes in gene expression during as a consequence of CPT treatment in maize immature embryos. In four independent experiments immature embryos were plated on MS medium supplemented with 50 uM CPT and incubated during three days. Untreated embryos incubated on MS medium were used as controls.

2010-11-01 | E-MEXP-2702 | biostudies-arrayexpress

Be TRI

Project description:Interventions: Patients receive 12 cycle of FOLFOXIRI+Bmab therapy (Bmab:5mg/kg, CPT-11:165mg / m 2, L-OHP:85mg/m, l-LV:200mg/m2, Infusional 5-FU:3200mg / m2) every 2 weeks.(Or continue until conflicting with cancellation criteria) Primary outcome(s): Response rate Study Design: single arm study, open(masking not used), uncontrolled control, single assignment, treatment purpose

| 2615585 | ecrin-mdr-crc

Phase II/III Trial of CPT-11/5-FU/l-LV (FOLFIRI) Versus CPT-11/TS-1 (IRIS) as Second Line Chemotherapy of Unresectable Colorectal Cancer

Project description:Intervention name : Irinotecan hydrochloride | Tegafur/Gimeracil/ Oteracil Potassium | Fluorouracil | Levofolinate Calcium Dosage And administration of the intervention : Irinotecan hydrochloride : injection, Fluorouracil : injection, Levofolinate Calcium : injection, Tegafur/Gimeracil/ Oteracil Potassium capsule : oral Primary outcome(s): Progression free survival Study Design: Open label, multicenter phase 2 / 3 study

| 2609944 | ecrin-mdr-crc

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