TAC1 blocking peptide (CDBP2864)

Product Overview
Substance P Blocking Peptide
Target
Substance P
Nature
Synthetic
Tag/Conjugate
Unconjugated
Procedure
None
Format
Liquid
Concentration
2 mg/ml
Size
20 μg
Preservative
None
Storage
A stock solution of 2mg/ml is recommended for most absorption control applications. For maximum stability, the peptide should be stored at -20℃. Most peptides will be stable in solution for several days at 4℃. Avoid repeated freeze/thaws.
UniProt ID
Antigen Description
This gene encodes four products of the tachykinin peptide hormone family, substance P and neurokinin A, as well as the related peptides, neuropeptide K and neuropeptide gamma. These hormones are thought to function as neurotransmitters which interact with nerve receptors and smooth muscle cells. They are known to induce behavioral responses and function as vasodilators and secretagogues. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]
Function
protein binding; substance P receptor binding;
Synonyms
TAC1; tachykinin, precursor 1; NK2; NPK; NKNA; TAC2; Hs.2563; protachykinin-1; PPT; substance K; substance P; neurokinin 1; neurokinin 2; neurokinin A; neuromedin L; tachykinin 2; neuropeptide K; neurokinin alpha; preprotachykinin; neuropeptide gamma; tachykinin, precursor 1 (substance K, substance P, neurokinin 1, neurokinin 2, neuromedin L, neurokinin alpha, neuropeptide K, neuropeptide gamma);

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References


Small molecule inhibition of non-canonical (TAK1-mediated) BMP signaling results in reduced chondrogenic ossification and heterotopic ossification in a rat model of blast-associated combat-related lower limb trauma

BONE

Authors: Strong, Amy L.; Spreadborough, Philip J.; Pagani, Chase A.; Haskins, Ryan M.; Dey, Devaveena; Grimm, Patrick D.; Kaneko, Keiko; Marini, Simone; Huber, Amanda K.; Hwang, Charles; Westover, Kenneth; Mishina, Yuji; Bradley, Matthew J.; Levi, Benjamin; Davis, Thomas A.

Heterotopic ossification (HO) is defined as ectopic bone formation around joints and in soft tissues following trauma, particularly blast-related extremity injuries, thermal injuries, central nerve injuries, or orthopaedic surgeries, leading to increased pain and diminished quality of life. Current treatment options include pharmacotherapy with non-steroidal anti-inflammatory drugs, radiotherapy, and surgical excision, but these treatments have limited efficacy and have associated complication profiles. In contrast, small molecule inhibitors have been shown to have higher specificity and less systemic cytotoxicity. Previous studies have shown that bone morphogenetic protein (BMP) signaling and downstream non-canonical (SMAD-independent) BMP signaling mediated induction of TGF-beta activated kinase-1 (TAK1) contributes to HO. In the current study, small molecule inhibition of TAK1, NG-25, was evaluated for its efficacy in limiting ectopic bone formation following a rat blast associated lower limb trauma and a murine burn tenotomy injury model. A significant decrease in total HO volume in the rat blast injury model was observed by microCT imaging with no systemic complications following NG-25 therapy. Furthermore, tissue-resident mesenchymal progenitor cells (MPCs) harvested from rats treated with NG-25 demonstrated decreased proliferation, limited osteogenic differentiation capacity, and reduced gene expression of Tac1, Col10a1, Ibsp, Smad3, and Sox2 (P < 0.05). Single cell RNA-sequencing of murine cells harvested from the injury site in a burn tenotomy injury model showed increased expression of these genes in MPCs during stages of chondrogenic differentiation. Additional in vitro cell cultures of murine tissue-resident MPCs and osteochondrogenic progenitors (OCPs) treated with NG-25 demonstrated reduced chondrogenic differentiation by 10.2-fold (P < 0.001) and 133.3-fold (P < 0.001), respectively, as well as associated reduction in chondrogenic gene expression. Induction of HO in Tak1 knockout mice demonstrated a 7.1-fold (P < 0.001) and 2.7-fold reduction (P < 0.001) in chondrogenic differentiation of murine MPCs and OCPs, respectively, with reduced chondrogenic gene expression. Together, our in vivo models and in vitro cell culture studies demonstrate the importance of TAK1 signaling in chondrogenic differentiation and HO formation and suggest that small molecule inhibition of TAK1 is a promising therapy to limit the formation and progression of HO.

Papillomavirus can be transmitted through the blood and produce infections in blood recipients: Evidence from two animal models

EMERGING MICROBES & INFECTIONS

Authors: Cladel, Nancy M.; Jiang, Pengfei; Li, Jingwei J.; Peng, Xuwen; Cooper, Timothy K.; Majerciak, Vladimir; Balogh, Karla K.; Meyer, Thomas J.; Brendle, Sarah A.; Budgeon, Lynn R.; Shearer, Debra A.; Munden, Regina; Cam, Maggie; Vallur, Raghavan; Christensen, Neil D.; Zheng, Zhi-Ming; Hu, Jiafen

Human papillomaviruses (HPV) contribute to most cervical cancers and are considered to be sexually transmitted. However, papillomaviruses are often found in cancers of internal organs, including the stomach, raising the question as to how the viruses gain access to these sites. A possible connection between blood transfusion and HPV-associated disease has not received much attention. Here we show, in rabbit and mouse models, that blood infected with papillomavirus yields infections at permissive sites with detectable viral DNA, RNA transcripts, and protein products. The rabbit skin tumours induced via blood infection displayed decreased expression of SLN, TAC1, MYH8, PGAM2, and APOBEC2 and increased expression of SDRC7, KRT16, S100A9, IL36G, and FABP9, as seen in tumours induced by local infections. Furthermore, we demonstrate that blood from infected mice can transmit the infection to uninfected animals. Finally, we demonstrate the presence of papillomavirus infections and virus-induced hyperplasia in the stomach tissues of animals infected via the blood. These results indicate that blood transmission could be another route for papillomavirus infection, implying that the human blood supply, which is not screened for papillomaviruses, could be a potential source of HPV infection as well as subsequent cancers in tissues not normally associated with the viruses.

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