Leptin Human, Rabbit Polyclonal Antibody

Cat. No.	Size	Price 1 pc / 2 - 5 pcs / 6+ pcs
RD181001220	0.1 mg	$300 / $266 / On request

Technical Data

Type

Polyclonal Antibody

Applications

Western blotting, ELISA, Immunoprecipitation

Source of Antigen

E. coli

Hosts

Rabbit

Preparation

The antibody was raised in rabbits by immunization with the recombinant Human Leptin.

Species Reactivity

Human

Purification Method

Immunoaffinity chromatography on a column with immobilized Human Leptin.

Antibody Content

0.1 mg (determined by BCA method, BSA was used as a standard)

Formulation

The antibody is lyophilized in 0.05 M phosphate buffer, 0.1 M NaCl, pH 7.2.

Reconstitution

Add 0.2 ml of deionized water and let the lyophilized pellet dissolve completely. Slight turbidity may occur after reconstitution, which does not affect activity of the antibody. In this case clarify the solution by centrifugation.

Shipping

At ambient temperature. Upon receipt, store the product at the temperature recommended below.

Storage/Expiration

The lyophilized antibody remains stable and fully active until the expiry date when stored at -20°C. Aliquot the product after reconstitution to avoid repeated freezing/thawing cycles and store frozen at -80°C. Reconstituted antibody can be stored at 4°C for a limited period of time; it does not show decline in activity after one week at 4°C.

Quality Control Test

Indirect ELISA – to determine titer of the antibody SDS PAGE – to determine purity of the antibody BCA - to determine quantity of the antibody

Note

This product is for research use only.

Summary

Research topic

Diabetology - Other Relevant Products, Energy metabolism and body weight regulation, Reproduction

Summary

Leptin, the product of the ob (obese) gene, is a single-chain 16 kDa proteohormone consisting of 146 amino acid residues. Leptin is produced by differentiated adiocytes, although production have been demonstrated in other tissues, such as fundus of the stomach, the sceletal muscle, the liver, and the placenta. Leptin is considered to play an important role in appetite control, fat metabolism and body weight regulation. It targets the central nervous system, in particular the hypothalamus, suppressing food intake and stimulating energy expenditure. In humans, leptin levels correlate with body mass index (BMI) and percentage body fat, and are elevated even in obese individuals. Leptin has a dual action; it decreases the appetite and increases energy consumption, causing more fat to be burned.

Product References (5)

References

Chan JL, Matarese G, Shetty GK, Raciti P, Kelesidis I, Aufiero D, De Rosa V, Perna F, Fontana S, Mantzoros CS. Differential regulation of metabolic, neuroendocrine, and immune function by leptin in humans. Proc Natl Acad Sci U S A. 2006 May 30;103(22):8481-6. doi: 10.1073/pnas.0505429103. Epub 2006 May 19. PubMed PMID: 16714386. PubMed CentralPMCID: PMC1482518. See more on PubMed
Aparicio T, Kermorgant S, Darmoul D, Guilmeau S, Hormi K, Mahieu-Caputo D, Lehy T. Leptin and Ob-Rb receptor isoform in the human digestive tract during fetal development. J Clin Endocrinol Metab. 2005 Nov;90(11):6177-84. doi: 10.1210/jc.2005-1498. Epub 2005 Sep 6. PubMed PMID: 16144948. See more on PubMed
Matarese G, Carrieri PB, La Cava A, Perna F, Sanna V, De Rosa V, Aufiero D, Fontana S, Zappacosta S. Leptin increase in multiple sclerosis associates with reduced number of CD4(+)CD25+ regulatory T cells. Proc Natl Acad Sci U S A. 2005 Apr 5;102(14):5150-5. doi: 10.1073/pnas.0408995102. Epub 2005 Mar 23. PubMed PMID: 15788534. PubMed CentralPMCID: PMC555982. See more on PubMed
Goïot H, Laigneau JP, Devaud H, Sobhani I, Bado A. Similarities and differences in the transcriptional regulation of the leptin gene promoter in gastric and adipose cells. FEBS Lett. 2005 Mar 28;579(9):1911-6. doi: 10.1016/j.febslet.2005.02.031. PubMed PMID: 15792795. See more on PubMed
Ricci MR, Lee MJ, Russell CD, Wang Y, Sullivan S, Schneider SH, Brolin RE, Fried SK. Isoproterenol decreases leptin release from rat and human adipose tissue through posttranscriptional mechanisms. Am J Physiol Endocrinol Metab. 2005 Apr;288(4):E798-804. doi: 10.1152/ajpendo.00446.2004. Epub 2004 Dec 7. PubMed PMID: 15585586. See more on PubMed

Summary References (20)

References to Leptin

Auwerx J, Staels B. Leptin (Review article). The Lancet . 13, 737 (1998);
Blum WF, Englaro P, Hanitsch S, Juul A, Hertel NT, Muller J, Skakkebaek NE, Heiman ML, Birkett M, Attanasio AM, Kiess W, Rascher W. Plasma leptin levels in healthy children and adolescents: dependence on body mass index, body fat mass, gender, pubertal stage, and testosterone. J Clin Endocrinol Metab. 1997 Sep;82 (9):2904-10
Chehab FF, Mounzih K, Lu R, Lim ME. Early onset of reproductive function in normal female mice treated with leptin. Science. 1997 Jan 3;275 (5296):88-90
Clement K, Vaisse C, Lahlou N, Cabrol S, Pelloux V, Cassuto D, Gourmelen M, Dina C, Chambaz J, Lacorte JM, Basdevant A, Bougneres P, Lebouc Y, Froguel P, Guy-Grand B. A mutation in the human leptin receptor gene causes obesity and pituitary dysfunction. Nature. 1998 Mar 26;392 (6674):398-401
Cohen B, Novick D, Rubinstein M. Modulation of insulin activities by leptin. Science. 1996 Nov 15;274 (5290):1185-8
Considine RV, Sinha MK, Heiman ML, Kriauciunas A, Stephens TW, Nyce MR, Ohannesian JP, Marco CC, McKee LJ, Bauer TL, et al. Serum immunoreactive-leptin concentrations in normal-weight and obese humans. N Engl J Med. 1996 Feb 1;334 (5):292-5
Friedman JM, Halaas JL. Leptin and the regulation of body weight in mammals. Nature. 1998 Oct 22;395 (6704):763-70
Halaas JL, Gajiwala KS, Maffei M, Cohen SL, Chait BT, Rabinowitz D, Lallone RL, Burley SK, Friedman JM. Weight-reducing effects of the plasma protein encoded by the obese gene. Science. 1995 Jul 28;269 (5223):543-6
Harigaya A, Nagashima K, Nako Y, Morikawa A. Relationship between concentration of serum leptin and fetal growth. J Clin Endocrinol Metab. 1997 Oct;82 (10):3281-4
Lonnqvist F, Arner P, Nordfors L, Schalling M. Overexpression of the obese (ob) gene in adipose tissue of human obese subjects. Nat Med. 1995 Sep;1 (9):950-3
Maffei M, Halaas J, Ravussin E, Pratley RE, Lee GH, Zhang Y, Fei H, Kim S, Lallone R, Ranganathan S, et al. Leptin levels in human and rodent: measurement of plasma leptin and ob RNA in obese and weight-reduced subjects. Nat Med. 1995 Nov;1 (11):1155-61
Montague CT, Farooqi IS, Whitehead JP, Soos MA, Rau H, Wareham NJ, Sewter CP, Digby JE, Mohammed SN, Hurst JA, Cheetham CH, Earley AR, Barnett AH, Prins JB, O'Rahilly S. Congenital leptin deficiency is associated with severe early-onset obesity in humans. Nature. 1997 Jun 26;387 (6636):903-8
Pelleymounter MA, Cullen MJ, Baker MB, Hecht R, Winters D, Boone T, Collins F. Effects of the obese gene product on body weight regulation in ob/ob mice. Science. 1995 Jul 28;269 (5223):540-3
Ricci MR, Lee MJ, Russell CD, Wang Y, Sullivan S, Schneider SH, Brolin RE, Fried SK. Isoproterenol decreases leptin release from rat and human adipose tissue through posttranscriptional mechanisms. Am J Physiol Endocrinol Metab. 2005 Apr;288 (4):E798-804
Schubring C, Prohaska F, Prohaska A, Englaro P, Blum W, Siebler T, Kratzsch J, Kiess W. Leptin concentrations in maternal serum and amniotic fluid during the second trimenon: differential relation to fetal gender and maternal morphometry. Eur J Obstet Gynecol Reprod Bi. 1999 Oct;86 (2):151-7
Spiegelman BM, Flier JS. Adipogenesis and obesity: rounding out the big picture. Cell. 1996 Nov 1;87 (3):377-89
Tartaglia LA. The leptin receptor. J Biol Chem. 1997 Mar 7;272 (10):6093-6
Tritos NA, Mantzoros CS. Leptin: its role in obesity and beyond. Diabetologia. 1997 Dec;40 (12):1371-9
Zhang F, Basinski MB, Beals JM, Briggs SL, Churgay LM, Clawson DK, DiMarchi RD, Furman TC, Hale JE, Hsiung HM, Schoner BE, Smith DP, Zhang XY, Wery JP, Schevitz RW. Crystal structure of the obese protein leptin-E100. Nature. 1997 May 8;387 (6629):206-9
Zhang Y, Proenca R, Maffei M, Barone M, Leopold L, Friedman JM. Positional cloning of the mouse obese gene and its human homologue. Nature. 1994 Dec 1;372 (6505):425-32

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