Abcam, ab245710, Human IDO ELISA Kit

Size: 1 x 96Tests / 1 x 384Tests / 10 x 96Tests
Human IDO ELISA Kit is a single-wash 90-min Simplestep used to quantify Human IDO with a sensitivity of 13 pg/ml. The assay uses a simple mix-wash-read protocol with just one incubation and one wash step. - Colorimetric Sandwich ELISA - 450 nm readout : works on any standard plate reader - Different formats for different needs: 10x96 plates for bulk orders and 384-well plate for higher throughput - Design your own immunoassay: we also offer the conjugation-ready antibody pair
Key facts
Detection method:Colorimetric,
Sample types:Cell culture extracts,
Reacts with:Human,
Assay type:Sandwich (quantitative),
Sensitivity:= 13 pg/mL,
Range:78.125 - 5000 pg/mL,
Assay time:1h 30m,
Assay Platform:Pre-coated microplate (12 x 8 well strips)

Product details:
Human IDO ELISA Kit ab245710 is a rapid single-wash 90-min Sandwich ELISA to measure Human IDO in cell culture extracts. This SimpleStep sensitivity is 13 pg/mL.
How the assay works
Human IDO SimpleStep ELISA
employs capture antibodies conjugated to an affinity tag that is recognized by the monoclonal antibody used to coat our SimpleStep ELISA
plates. This approach to sandwich ELISA allows the formation of the antibody-analyte sandwich complex in a single step, significantly reducing assay time. See the SimpleStep ELISA
protocol summary in the image section for further details.
Assay Specificity
Our SimpleStep ELISA
kits use recombinant monoclonal antibodies rigorously validated to ensure the highest level of consistency and reproducibility, improved sensitivity and specificity and ease of scalability and security of supply.
Please refer to our protocol booklet for more details.
Human IDO ELISA Kit ab245710 protocol summary
1. Mix: add samples/standards to the wells together with the capture and detector antibody cocktail. Incubate 1 hr at room temperature
2. Wash
3. Add TMB development solution - incubate for 10 min
4. Add Stop solution
5. Read the results on a plate reader at 450 nm
Save your precious samples
Our 384-well Human IDO ELISA Kit only requires a maximum of 12.5µL sample
Design your own immunoassay
We offer the antibody pair used in this kit in a BSA and Azide-free format, ready for conjugation:
- Anti-Indoleamine 2, 3-dioxygenase antibody [EPR20374] - BSA and Azide free (Capture)
ab252645
- Anti-Indoleamine 2, 3-dioxygenase antibody [EPR20374-97] - BSA and Azide free (Detector)
ab252645
REACH authorisation
Abcam has not and does not intend to apply for the REACH Authorisation of customers' uses of products that contain European Authorisation list (Annex XIV) substances.
It is the responsibility of our customers to check the necessity of application of REACH Authorisation, and any other relevant authorisations, for their intended uses.

Properties and Storage Information:
Shipped at conditions-Blue Ice, Appropriate short-term storage conditions-+4°C, Appropriate long-term storage conditions-+4°C, Storage information-+4°C

Supplementary Information:
This supplementary information is collated from multiple sources and compiled automatically.
Indoleamine 2 3-dioxygenase (IDO) also known as IDO1 is an enzyme involved in the catabolism of tryptophan to kynurenine. It weighs approximately 45 kDa and it is an important target in immunoregulatory processes. IDO is highly expressed in antigen-presenting cells such as dendritic cells and macrophages as well as in various tumor cells where it helps modulate immune responses. This enzyme can also be measured by using assays like IDO ELISA.
Biological function summary
IDO plays a role in immune response regulation by degrading tryptophan an essential amino acid needed for T-cell proliferation. The depletion of tryptophan and the accumulation of its metabolites such as kynurenine cause immunosuppressive effects within the tissue microenvironment. While IDO functions mostly as a standalone enzyme its activity influences the cellular surroundings by altering the balance of local immune reactions.
Pathways
IDO integrates into the tryptophan metabolism pathway and is important in the kynurenine pathway. Through this pathway it maintains immune homeostasis and cell defense mechanisms. Proteins like kynureninase and kynurenine 3-monooxygenase also participate in the same metabolic processes which further extend the effects of tryptophan metabolism on immune cell behavior.
IDO is linked with cancer and chronic inflammatory conditions. In cancer elevated IDO expression suppresses anti-tumor immunity aiding tumor cells to evade immune surveillance. It also plays a role in autoimmune disorders by regulating excessive immune activity. During cancer progression IDO often works in conjunction with immune checkpoint proteins like PD-L1 which further enhances its immunosuppressive capabilities within the tumor microenvironment.