New Products
Ordering
Distributors
Resources
FAQs
CartFeline Leukemia Inhibitory Factor (LIF) (Yeast-derived Recombinant Protein) - 500 ug (5 x 100 ug vials)
Bulk quantities of Feline LIF protein are available.
Please contact us for pricing.
Feline LIF (Leukemia Inhibitory Factor) Specifications
Molecular Weight (calculated) - 19.7kDa
Amino Acid Sequence - SPLPITPVNA TCATRHPCHS NLMNQIRNQL AQLNGSANAL FILYYTAQGE PFPNNLDKLC GPNVTDFPPF HANGTEKTRL VELYRIIAYL GASLGNITRD QKVLNPNALS LHSKLNATAD IMRGLLSNVL CRLCNKYHVA HVDVAYGPDT SGKDVFQKKK LGCQLLGKYK QVIAVVAQAF (180)
Gene ID - 101090296
Homology Across Species
Felis catus (domestic cat) LIF – 100%
Acinonyx jubatus (cheetah) LIF – 100%
Callorhinus ursinus (northern fur seal) LIF – 100%
Eumetopias jubatus (Steller sea lion) LIF – 100%
Lynx canadensis (Canada lynx) LIF – 100%
Lynx pardinus (Spanish lynx) LIF – 100%
Odobenus rosmarus divergens (Pacific walrus) LIF – 100%
Panthera pardus (leopard) LIF – 100%
Panthera tigris altaica (Amur tiger) LIF – 100%
Puma concolor (puma) LIF – 100%
Zalophus californianus (California sea lion) LIF – 100%
Ailuropoda melanoleuca (giant panda) LIF – 99%
Leptonychotes weddellii (Weddell seal) LIF – 99%
Mustela putorius furo (domestic ferret) LIF – 99%
Ursus maritimus (polar bear) LIF – 98%
More - https://blast.ncbi.nlm.nih.gov/
Endotoxin - Naturally endotoxin-free
Applications
Cell Culture, ELISA Standard, Western Blot Control
LIF Background
Leukemia inhibitory factor, or LIF, is a member of the IL-6 family. LIF affects cell growth by inhibiting differentiation. When LIF levels drop, the cells differentiate. Leukemia inhibitory factor derives its name from its ability to induce the terminal differentiation of myeloid leukemic cells, thus preventing their continued growth. Other properties attributed to LIF include: the growth promotion and cell differentiation of different types of target cells, influence on bone metabolism, cachexia, neural development, embryogenesis and inflammation. p53 regulated LIF has been shown to facilitate implantation in the mouse model and possibly in humans. Removal of LIF pushes stem cells toward differentiation, but they retain their proliferative potential or pluripotency. LIF is typically added to stem cell culture medium to reduce spontaneous differentiation.
Alternate Names - LIF, CDF, DIA, HILDA, MLPLI, leukemia inhibitory factor, interleukin 6 family cytokine, LIF interleukin 6 family cytokine
Endogenous pluripotent factor expression after reprogramming cat fetal fibroblasts using inducible transcription factors.
Zhou R, Comizzoli P, Keefer CL.
Mol Reprod Dev. 2019 Nov;86(11):1671-1681. doi: 10.1002/mrd.23257. Epub 2019 Aug 19.
Applications: Transduction of cat fetal fibroblasts
Inducing Pluripotency in the Domestic Cat (Felis catus).
Dutton LC, Dudhia J, Guest DJ, Connolly DJ.
Stem Cells Dev. 2019 Oct 1;28(19):1299-1309. doi: 10.1089/scd.2019.0142. Epub 2019 Sep 5.
Applications: Generation and culture of iPSCs
Abstract
Domestic cats suffer from a range of inherited genetic diseases, many of which display similarities with equivalent human conditions. Developing cellular models for these inherited diseases would enable drug discovery, benefiting feline health and welfare as well as enhancing the potential of cats as relevant animal models for translation to human medicine. Advances in our understanding of these diseases at the cellular level have come from the use of induced pluripotent stem cells (iPSCs). iPSCs can differentiate into virtually any cell type and can be derived from adult somatic cells, therefore overcoming the ethical implications of destroying embryos to obtain embryonic stem cells. No studies, however, report the generation of iPSCs from domestic cats [feline iPSCs (fiPSCs)]. Feline adipose-derived fibroblasts were infected with amphotropic retrovirus containing the coding sequences for human Oct4, Sox2, Klf4, cMyc, and Nanog. Isolated iPSC clones were expanded on inactivated mouse embryonic fibroblasts in the presence of feline leukemia inhibitory factor (fLIF). Retroviral delivery of human pluripotent genes gave rise to putative fiPSC colonies within 5-7 days. These iPS-like cells required fetal bovine serum and fLIF for maintenance. Colonies were domed with refractile edges, similar to mouse iPSCs. Immunocytochemistry demonstrated positive staining for stem cell markers: alkaline phosphatase, Oct4, Sox2, Nanog, and SSEA1. Cells were negative for SSEA4. Expression of endogenous feline Nanog was confirmed by quantitative polymerase chain reaction. The cells were able to differentiate in vitro into cells representative of the three germ layers. These results confirm the first generation of induced pluripotent stem cells from domestic cats. These cells will provide valuable models to study genetic diseases and explore novel therapeutic strategies.
Ordering Information & Terms and Conditions
We require a phone number and e-mail address for both the end user of the ordered product and your institution's Accounts Payable representative. This information is only used to help with technical and billing issues.
Via Phone
Please call us at 651-646-0089 between the hours of 8:30 a.m. and 5:30 p.m. CST Mon - Fri.
Via Fax
Orders can be faxed to us 24 hours a day at 651-646-0095.
Via E-mail
Please e-mail orders to orders@KingfisherBiotech.com.
Via Mail
Please mail your order to:
Sales Order Entry
Kingfisher Biotech, Inc.
1000 Westgate Drive
Suite 123
Saint Paul, MN 55114
USA
Product Warranty
Kingfisher Biotech brand products are warranted by Kingfisher Biotech, Inc. to meet stated product specifications and to conform to label descriptions when used, handled and stored according to instructions. Unless otherwise stated, this warranty is limited to one year from date of sale. Kingfisher Biotech’s sole liability for the product is limited to replacement of the product or refund of the purchase price. Kingfisher Biotech brand products are supplied for research applications. They are not intended for medicinal, diagnostic or therapeutic use. The products may not be resold, modified for resale or used to manufacture commercial products without prior written approval from Kingfisher Biotech.
Payment Terms
All prices are subject to change without notice. Payment terms are net thirty (30) days from receipt of invoice. A 1.5% service charge per month is added for accounts past due over 30 days. Prices quoted are U.S. Dollars. The purchaser assumes responsibility for any applicable tax. You will only be charged for products shipped. Products placed on back order will be charged when shipped. If you place an order and fail to fulfill the terms of payment, Kingfisher Biotech, Inc. may without prejudice to any other lawful remedy defer further shipments and/or cancel any order. You shall be liable to Kingfisher Biotech, Inc. for all costs and fees, including attorneys' fees, which Kingfisher Biotech, Inc. may reasonably incur in any actions to collect on your overdue account. Kingfisher Biotech, Inc. does not agree to, and is not bound by, any other terms or conditions such as terms in a purchase order that have not been expressly agreed to in writing signed by a duly authorized officer of Kingfisher Biotech, Inc.
Shipping
Shipping and handling costs are prepaid and added to the invoice. Shipping and handling costs will be charged only on the first shipment in situations where an order contains back ordered products. Kingfisher Biotech, Inc. reserves the right to select the packaging and shipping method for your order, which will ensure the stability of the product and also efficient tracing. Domestic orders will normally be shipped by overnight. Damage during shipment is covered by the warranty provided in these terms and conditions. For international orders, title to the goods passes in the United States when the goods are placed with the shipper. For all orders, the risk of loss of the goods passes when the goods are placed with the shipper.
Returns
Please call customer service before returning any products for refund, credit or replacement. NO returns will be accepted without prior written authorization. Returns are subject to a restocking fee of 20%.