Human TFF1/PS2 ELISA Kit PicoKine®

Mfr.No.

EK1232

Sensitivity

<10 pg/ml

Detection Range

15.6 pg/ml - 1,000 pg/ml

Reactivity

Human

Sample Volume

Concentration (pg/ml)	0	15.6	31.2	62.5	125	250	500	1000
O.D.	0.052	0.220	0.321	0.523	0.866	1.253	1.722	2.013

Description

Human TFF1/Ps2 ELISA Kit PicoKine® (96 Tests). Quantitate Human TFF1 in cell culture supeatants, cell lysates, serum and plasma (heparin, EDTA). Sensitivity: 10pg/ml. The brand Picokine indicates this is a premium quality ELISA kit. Each Picokine kit delivers precise quantification, high sensitivity, and excellent reproducibility. Only our most reliable and effective kits qualify as Picokine, guaranteeing top-tier results for your assays.

Alternative Names

Trefoil factor 1;Breast cancer estrogen-inducible protein;PNR-2;Polypeptide P1.A;hP1.A;Protein pS2;TFF1;BCEI, PS2;

Molecular Weight

9150 MW

Immunogen

Expression system for standard: E.coli; Immunogen sequence: E25-F84

Kit Components

Description Quantity
Pre-coated 96-well strip microplate 1
Standard 2 vials
Biotinylated antibody (100x) 100ul
Avidin-Biotin-Peroxidase Complex (100x) 100ul
Sample Diluent 30ml
Antibody Diluent 12ml
Avidin-Biotin-Peroxidase Diluent 12ml
Color Developing Reagent (TMB) 10ml
Stop Solution 10ml
Wash Buffer (25x) 20ml
Adhesive plate sealers 4

Cross Reactivity

There is no detectable cross-reactivity with other relevant proteins.

Specificity

Natural and recombinant human TFF1

Subcellular Localization

Secreted .

Sample Type

Cell culture supeatants, Cell lysates, Serum, Plasma

Anticoagulant

heparin or EDTA

Precision

	Intra-Assay Precision			Inter-Assay Precision
Sample	1	2	3	1	2	3
n	16	16	16	24	24	24
Mean (pg/ml)	35	177	433	38	193	420
Standard deviation	1.96	9.91	29.87	2.16	11	29.4
CV (%)	5.6%	5.6%	6.9%	5.7%	5.7%	7%

Protein Function

Stabilizer of the mucous gel overlying the gastrointestinal mucosa that provides a physical barrier against various noxious agents. May inhibit the growth of calcium oxalate crystals in urine. .

Background

TFF1 (Trefoil factor 1), also known as pS2, is a protein that in humans is encoded by the TFF1 gene. Members of the trefoil family are characterized by having at least one copy of the trefoil motif, a 40-amino acid domain that contains three conserved disulfides. They are stable secretory proteins expressed in gastrointestinal mucosa. Their functions are not defined, but they may protect the mucosa from insults, stabilize the mucus layer, and affect healing of the epithelium. It is found that TFF1 in normal human urine inhibited the growth of calcium oxalate crystals. Urinary TFF1 showed an inhibitory potency similar to that of nephrocalcin, and inhibition was dose dependent and inhibited by TFF1 antisera, particularly by antisera ed to the TFF1 C terminus. Concentrations and relative amounts of TFF1 in the urine of patients with idiopathic calcium oxalate kidney stones were significantly less than those found in controls. This gene, which is expressed in the gastric mucosa, has also been studied because of its expression in human tumors. This gene and two other related trefoil family member genes are found in a cluster on chromosome 21.

Reproducibility

Lots	Lot 1 (pg/ml)	Lot 2 (pg/ml)	Lot 3 (pg/ml)	Lot 4 (pg/ml)	Mean (pg/ml)	Standard Deviation	CV (%)
Sample 1	35	37	38	40	37	1.8	4.8%
Sample 2	177	154	156	174	165	10.32	6.2%
Sample 3	433	394	416	409	413	14.01	3.3%

*number of samples for each test n=16.

Notes

Material Required But Not Provided:
Microplate Reader capable of reading absorbance at 450nm.
Incubator.
Automated plate washer .
Pipettes and pipette tips capable of precisely dispensing 0.5 µl through 1 ml volumes of aqueous solutions.
Multichannel pipettes are recommended for large amount of samples.
Deionized or distilled water.
500ml graduated cylinders.
Test tubes for dilution.

Gene ID	7031
Gene Name	TFF1
UniProt ID	P04155
Protein Name	Trefoil factor 1
Tissue Specificity	Found in stomach, with highest levels in the upper gastric mucosal cells (at protein level). Detected in goblet cells of the small and large intestine and rectum, small submucosal glands in the esophagus, mucous acini of the sublingual gland, submucosal glands of the trachea, and epithelial cells lining the exocrine pancreatic ducts but not in the remainder of the pancreas (at protein level). Scattered expression is detected in the epithelial cells of the gallbladder and submucosal glands of the vagina, and weak expression is observed in the bronchial goblet cells of the pseudostratified epithelia in the respiratory system (at protein level). Detected in urine (at protein level). Strongly expressed in breast cancer but at low levels in normal mammary tissue. It is regulated by estrogen in MCF-7 cells. Strong expression found in normal gastric mucosa and in the regenerative tissues surrounding ulcerous lesions of gastrointestinal tract, but lower expression found in gastric cancer (at protein level). .
Sequence	Contains 1 P-type (trefoil) domain.

Applications	ELISA
Research Area	Nuclear Hormone Receptors,Nuclear Signaling,Signal Transduction,Signaling Pathway

Storage	Store at 4°C for 6 months, at -20°C for 12 months. Avoid multiple freeze-thaw cycles (Ships with gel ice, can store for up to 3 days in room temperature. Freeze upon receiving.)

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SKU	Supplier No.	Size	Your price	Quantity
BHE21000842	EK1232	96 wells/kit	$750		Add to Cart

Human TFF1/PS2 ELISA Kit PicoKine®

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