irinotecan / TOP1 Cancer Research Results

CPT-11, irinotecan: Click to Expand ⟱
Features:
Irinotecan is a chemotherapy drug widely used to treat several solid tumors. It is a semisynthetic camptothecin derivative and functions primarily as a topoisomerase I inhibitor.
-Active metabolite: SN-38 (much more potent than irinotecan itself)

Common Regimens
Regimen Components
FOLFIRI Folinic acid + 5-FU + Irinotecan
FOLFIRINOX 5-FU + Leucovorin + Irinotecan + Oxaliplatin
XELIRI / CAPIRI Capecitabine + Irinotecan

Potential strategies to sensitize tumors to irinotecan:
Strategy	       Rationale
GSH depletion	       Reduces detox of SN-38
PRDX/TXNRD stress	Lowers redox buffering
Glycolysis inhibition	Limits repair energy
PEMF / AgNPs	        ↑ ROS, ↑ drug uptake
Timing selenium	        Avoid boosting antioxidant defenses during therapy
Report of combining CPT-11 and SeNPs to increase NRF2 in normal cells(chemoprotective) and decrease NRF2 in cancer cells(chemosentization).
TOP1, Topoisomerase I: Click to Expand ⟱
Source:
Type:
Topoisomerase I (TOP1) is an essential nuclear enzyme involved in relieving DNA supercoiling during replication and transcription.
• Elevated TOP1 expression has been observed in several tumor types, such as colorectal, ovarian, breast, and lung cancers.
• Increased TOP1 levels may correlate with higher proliferation rates, as actively dividing tumor cells require efficient relief of DNA.

• In some cancers, high TOP1 expression has been associated with aggressive tumor behavior, higher grade, and potentially poorer clinical outcomes. This may be due in part to increased proliferation and/or a greater propensity for genomic instability.
• In other contexts, TOP1 expression might indicate sensitivity to TOP1-targeted therapies. For example, tumors with high TOP1 activity may respond better to chemotherapeutic agents (e.g., irinotecan) that target the enzyme, potentially improving outcomes when appropriate treatment is administered.

TOP1 is a critical enzyme in maintaining DNA integrity whose expression in cancers can reflect tumor proliferation and genomic instability. While high TOP1 expression is often associated with aggressive tumor behavior and poorer prognosis in several cancer types, it also has therapeutic relevance because tumors with elevated TOP1 may be more sensitive to TOP1 inhibitors.
Scientific Papers found: Click to Expand⟱
5810- CPT,  CPT-11,    Camptothein-Based Anti-Cancer Therapies and Strategies to Improve Their Therapeutic Index
- Review, NA, NA
AntiCan↑, BioAv↓, toxicity⇅, TOP1↓, Apoptosis↑, TumCP↓, other↝, BioAv↑, other↝, eff↑,

Showing Research Papers: 1 to 1 of 1

* indicates research on normal cells as opposed to diseased cells
Total Research Paper Matches: 1

Pathway results for Effect on Cancer / Diseased Cells:


Cell Death ⓘ

Apoptosis↑, 1,  

Transcription & Epigenetics ⓘ

other↝, 2,  

Proliferation, Differentiation & Cell State ⓘ

TOP1↓, 1,  

Migration ⓘ

TumCP↓, 1,  

Drug Metabolism & Resistance ⓘ

BioAv↓, 1,   BioAv↑, 1,   eff↑, 1,  

Functional Outcomes ⓘ

AntiCan↑, 1,   toxicity⇅, 1,  
Total Targets: 9

Pathway results for Effect on Normal Cells:


Total Targets: 0

Scientific Paper Hit Count for: TOP1, Topoisomerase I
Query results interpretion may depend on "conditions" listed in the research papers.
Such Conditions may include : 
  -low or high Dose
  -format for product, such as nano of lipid formations
  -different cell line effects
  -synergies with other products 
  -if effect was for normal or cancerous cells

Filter Conditions: Pro/AntiFlg:%  IllCat:%  CanType:%  Cells:%  prod#:380  Target#:1117  State#:%  Dir#:1
  wNotes=0  sortOrder:rid,rpid

 

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