Chemotherapy / ER Stress Cancer Research Results

Chemo, Chemotherapy: Click to Expand ⟱
Features: treatment category
Chemotherapy is a treatment approach that uses drugs to target and kill rapidly dividing cells, primarily cancer cells. However, because many normal cells also divide quickly (such as those in the bone marrow, digestive tract, and hair follicles), chemotherapy can also affect these cells, leading to a range of side effects.

Main Classes of Chemotherapy Agents and Examples
Alkylating Agents:
-work by adding alkyl groups to DNA, which interferes with the DNA’s structure and prevents replication.
Examples: Cyclophosphamide, Ifosfamide, Melphalan, Chlorambucil, Busulfan.

Anti-metabolites:
-interfere with DNA and RNA synthesis by substituting for the normal building blocks of nucleic acids.
Examples: Methotrexate, 5-Fluorouracil (5-FU), Cytarabine, Gemcitabine, 6-Mercaptopurine.

Anti-microtubule Agents:
-interfere with the structures that separate chromosomes during cell division (mitosis). Examples: Paclitaxel, Docetaxel, Vincristine, Vinblastine.

Topoisomerase Inhibitors:
-target the enzymes topoisomerase I and II, which control the changes in DNA structure required for replication.
Examples: Etoposide (topoisomerase II inhibitor), Irinotecan (topoisomerase I inhibitor), Topotecan.

Cytotoxic Antibiotics:
-intercalate into DNA, inhibiting the replication of cancer cells.
Examples: Doxorubicin, Daunorubicin, Bleomycin, Mitoxantrone.

Platinum-Based Agents:
-contain platinum and cause cross-linking of DNA, which interferes with DNA repair and replication. Examples: Cisplatin, Carboplatin, Oxaliplatin.

Many chemotherapy agents exert their effects, at least in part, by inducing oxidative stress in cancer cells. They can increase ROS levels through several mechanisms:
-Direct generation of free radicals.
-Disruption of mitochondrial function, leading to increased production of ROS.
-Interference with the cell’s antioxidant systems.

-May want to avoid antioxidants 7 days bef
ore and 7 days after chemo.
Examples: NAC, Glutathione, Alpha Lipoic Acid, Vitamin E
-anti-oxidants known to have pro-oxidant effects (like Quercetin, Curcumin, etc.) should not be taken 2-3 days before and after chemo
-pro-oxidants known to bring good benefit to chemo can be continued during chemo. Examples are: Omega 3, Aremisia Annua, Silver NanoParticles.


ER Stress, endoplasmic reticulum (ER) stress signaling pathway: Click to Expand ⟱
Source:
Type:
Protein expression of ATF, GRP78, and GADD153 which is a hall marker of ER stress.
The endoplasmic reticulum (ER) stress signaling pathway plays a crucial role in maintaining cellular homeostasis and responding to various stressors, including those encountered in cancer. When cells experience stress, such as the accumulation of misfolded proteins, they activate a series of signaling pathways collectively known as the unfolded protein response (UPR). The UPR aims to restore normal function by enhancing the protein-folding capacity of the ER, degrading misfolded proteins, and, if the stress is unresolved, triggering apoptosis.
The activation of ER stress pathways can contribute to resistance against chemotherapy and targeted therapies. Cancer cells may utilize the UPR to survive treatment-induced stress, making it challenging to achieve effective therapeutic outcomes.

-ER stress-associated proteins include: phosphorylation of PERK, eIF2α, ATF4, CHOP and cleaved-caspase 12



Scientific Papers found: Click to Expand⟱
2732- BetA,  Chemo,    Betulinic acid chemosensitizes breast cancer by triggering ER stress-mediated apoptosis by directly targeting GRP78
- in-vitro, BC, MCF-7 - in-vitro, BC, MDA-MB-231 - in-vitro, Nor, MCF10
ChemoSen↑, selectivity↑, GRP78/BiP↑, ER Stress↑, PERK↑, Ca+2↑, Cyt‑c↑, BAX↑, Bcl-2↓,

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

BAX↑, 1,   Bcl-2↓, 1,   Cyt‑c↑, 1,  

Protein Folding & ER Stress

ER Stress↑, 1,   GRP78/BiP↑, 1,   PERK↑, 1,  

Migration

Ca+2↑, 1,  

Drug Metabolism & Resistance

ChemoSen↑, 1,   selectivity↑, 1,  
Total Targets: 9

Pathway results for Effect on Normal Cells:


Total Targets: 0

Scientific Paper Hit Count for: ER Stress, endoplasmic reticulum (ER) stress signaling pathway
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#:233  Target#:103  State#:%  Dir#:%
wNotes=0 sortOrder:rid,rpid

 

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