Human HSF1 Ready-To-Use IHC Kit

Cat. No.: IHC0507H
Sample Type: FFPE tissue
Size: 50T (including a control slide)
Storage and Stability: Please store components at the temperatures indicated on the individual tube labels. The kit is stable for 6 months from the date of receipt.

Background

All organisms respond to elevated temperatures and a variety of environmental stresses by rapid synthesis of heat shock RNAs and proteins. The regulation of heat shock gene transcription is mediated by the transcriptional activator, heat shock factor (HSF), which binds to heat shock response elements (HSEs). These HSEs are found as three repeats of a 5-nucleotide {nGAAn} module, arranged in alternating orientation and present upstream of all heat shock genes. The HSEs are highly conserved among species yet HSF purified from yeast, Drosophila and human have different molecular weights and the proteins do not show significant immunological cross reaction. Two HSFs have been identified in human cells, HSF1 and HSF2, which bind to the same HSEs and have 38% sequence identity. These factors are activated by distinct stimuli, HSF1 is responsive to classical stress signals such as heat, heavy metals and oxidative reagents, whereas HSF2 is activated during hemin-mediated differentiation of human erythroleukemia cells. HSF1 exists constitutively in the cytoplasm and the nucleus of unstressed cells as a monomer which lacks DNA binding activity. Through an unknown signal generated during stress, HSF1 becomes activated to a nuclear localized, trimeric state which binds to DNA. The phosphorylation of HSF1 is necessary for maximal transcription of heat shock genes.

Synonyms

Materials Supplied

Number	Component	50T	Concentration	Storage
1	PBS Buffer (powder)	2L x 2	20x	RT
2	Antigen Retrieval Buffer	20ml	100x	2-8°C
3	Endogenous Peroxidase Blocking Buffer	3ml	RTU	2-8°C
4	Blocking Buffer	3ml	RTU	2-8°C
5	Primary Antibody (Human HSF1 Recombinant Rabbit mAb)	6ml	RTU	2-8°C
6	Secondary Antibody (Goat Anti-Rabbit IgG H&L, HRP conjugated)	6ml	RTU	2-8°C
7	Chromogen Component A	0.3ml	RTU	-20°C
8	Chromogen Component B	0.3ml	RTU	-20°C
9	Counter Staining Reagent	5ml	RTU	RT
10	Differentiation Reagent	6ml	RTU	RT
11	Mounting Media	5ml	RTU	RT
12	Control slide (Human colon cancer)	1 slide	RTU	RT
13	Datasheet	1 copy

Notes

1. The positive control slide provided in the kit allows you to be sure that the experimental set-up is working properly.
2. Do not allow slides to dry at any time during this procedure.
3. Please don't replace the matching reagents in this product with other manufacturers' products.
4. As DAB is a carcinogen, please take necessary precautions.
5. PBS (reagent 1) can be stored for one week at 4℃ after preparation; The antigen retrieval buffer (1×reagent 2) and the chromogenic agent (the mixture of reagents 7 and 8) should be prepared right before each assay.

As DAB is a carcinogen, please take necessary precautions.

Important Note: This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.