|Application ||IHC-P, E|
|Other Accession||NP_00129193, 24431985|
|Calculated MW||109849 Da|
|Application Notes||PIWI-L2 antibody can be used for detection of PIWI-L2 by immunohistochemistry at 5 µg/mL.|
|Reconstitution & Storage||PIWI-L2 antibody can be stored at 4℃ for three months and -20℃, stable for up to one year. As with all antibodies care should be taken to avoid repeated freeze thaw cycles. Antibodies should not be exposed to prolonged high temperatures.|
|Precautions||PIWI-L2 Antibody is for research use only and not for use in diagnostic or therapeutic procedures.|
|Function||Plays a central role during spermatogenesis by repressing transposable elements and preventing their mobilization, which is essential for the germline integrity. Plays an essential role in meiotic differentiation of spermatocytes, germ cell differentiation and in self-renewal of spermatogonial stem cells. Its presence in oocytes suggests that it may participate in similar functions during oogenesis in females. Acts via the piRNA metabolic process, which mediates the repression of transposable elements during meiosis by forming complexes composed of piRNAs and Piwi proteins and governs the methylation and subsequent repression of transposons. Directly binds piRNAs, a class of 24 to 30 nucleotide RNAs that are generated by a Dicer- independent mechanism and are primarily derived from transposons and other repeated sequence elements. Associates with primary piRNAs in the cytoplasm and is required for PIWIL4/MIWI2 nuclear localization and association with secondary piRNAs antisense. The piRNA process acts upstream of known mediators of DNA methylation. Participates in a piRNA amplification loop. Besides their function in transposable elements repression, piRNAs are probably involved in other processes during meiosis such as translation regulation. Indirectly modulate expression of genes such as PDGFRB, SLC2A1, ITGA6, GJA7, THY1, CD9 and STRA8. Inhibits tumor cell growth when repressed. When overexpressed, acts as an oncogene by inhibition of apoptosis and promotion of proliferation in tumors (By similarity).|
|Cellular Location||Cytoplasm. Note=Present in chromatoid body. Probable component of the meiotic nuage, also named P granule, a germ-cell-specific organelle required to repress transposon activity during meiosis (By similarity)|
|Tissue Location||Expressed in adult testis and in most tumors.|
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Provided below are standard protocols that you may find useful for product applications.
PIWI-L2 Antibody: PIWI-L2 is a member of the PIWI subfamily of Argonaute proteins, evolutionarily conserved proteins containing both PAZ and Piwi motifs that are crucial for the biogenesis and function of small non-coding RNAs and play important roles in stem cell self-renewal, RNA silencing, and translational regulation in diverse organisms. PIWI-L2 has been implicated in multiple roles including stem cell self-renewal and is highly expressed in many breast cancers. In these tumors, PIWI-L2 silences the expression of STAT3, a regulator of Bcl-XL and cyclin D1, allowing the proliferation and survival of breast cancer stem cells. Recent studies have shown that overexpression of PIWI-like proteins are potential biomarkers for colon and other cancers.
Kuramochi-Miyagawa S, Kimura T, Yomogida K, et al. Two mouse piwi-related genes: miwi and mili. Mech. Dev. 108:121-33.
Thomson T and Lin H. The biogenesis and function PIWI proteins and piRNAs: progress and prospect. Annu. Rev. Cell Dev. Biol. 2009; 25:355-76.
Lee JH, Jung C, Javadian-Elyaderani P, et al. Pathways of proliferation and antiapoptosis driven in breast cancer stem cells by stem cell protein Piwil2. Cancer Res. 2010; 70:4569-79.
Li L, Yu C, Gao H, et al. Argonaute proteins: potential biomarkers for human colon cancer. BMC Cancer 2010; 10:38.
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