66,457 research outputs found
Two-photon interference with continuous-wave multi-mode coherent light
We report two-photon interference with continuous-wave multi-mode coherent
light. We show that the two-photon interference, in terms of the detection time
difference, reveals two-photon beating fringes with the visibility .
While scanning the optical delay of the interferometer, Hong-Ou-Mandel dips or
peaks are measured depending on the chosen detection time difference. The HOM
dips/peaks are repeated when the optical delay and the first-order coherence
revival period of the multi-mode coherent light are the same.Comment: 9 pages, 5 figure
Pair Production of Scalar Dyons in Kerr-Newman Black Holes
We study the spontaneous pair production of scalar dyons in the near extremal
dyonic Kerr-Newman (KN) black hole, which contains a warped AdS structure
in the near horizon region. The leading term contribution of the pair
production rate and the absorption cross section ratio are also calculated
using the Hamilton-Jacobi approach and the thermal interpretation is given. In
addition, the holographic dual conformal field theories (CFTs) descriptions of
the pair production rate and absorption cross section ratios are analyzed both
in the -, - and -pictures respectively based on the threefold dyonic
KN/CFTs dualities.Comment: 12 pages, 3 figures, revtex4. arXiv admin note: text overlap with
arXiv:1607.0261
Peptide-enhanced mRNA transfection in cultured mouse cardiac fibroblasts and direct reprogramming towards cardiomyocyte-like cells.
The treatment of myocardial infarction is a major challenge in medicine due to the inability of heart tissue to regenerate. Direct reprogramming of endogenous cardiac fibroblasts into functional cardiomyocytes via the delivery of transcription factor mRNAs has the potential to regenerate cardiac tissue and to treat heart failure. Even though mRNA delivery to cardiac fibroblasts has the therapeutic potential, mRNA transfection in cardiac fibroblasts has been challenging. Herein, we develop an efficient mRNA transfection in cultured mouse cardiac fibroblasts via a polyarginine-fused heart-targeting peptide and lipofectamine complex, termed C-Lipo and demonstrate the partial direct reprogramming of cardiac fibroblasts towards cardiomyocyte cells. C-Lipo enabled the mRNA-induced direct cardiac reprogramming due to its efficient transfection with low toxicity, which allowed for multiple transfections of Gata4, Mef2c, and Tbx5 (GMT) mRNAs for a period of 2 weeks. The induced cardiomyocyte-like cells had α-MHC promoter-driven GFP expression and striated cardiac muscle structure from α-actinin immunohistochemistry. GMT mRNA transfection of cultured mouse cardiac fibroblasts via C-Lipo significantly increased expression of the cardiomyocyte marker genes, Actc1, Actn2, Gja1, Hand2, and Tnnt2, after 2 weeks of transfection. Moreover, this study provides the first direct evidence that the stoichiometry of the GMT reprogramming factors influence the expression of cardiomyocyte marker genes. Our results demonstrate that mRNA delivery is a potential approach for cardiomyocyte generation
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