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Title: Extremely Bright, Near-IR Emitting Spontaneously Blinking Fluorophores Enable Ratiometric Multicolor Nanoscopy in Live Cells

Journal Article · · ACS Central Science
 [1];  [2];  [3];  [2];  [3];  [2];  [2];  [2]; ORCiD logo [1]
  1. Univ. of California, Berkeley, CA (United States); Yale Univ., New Haven, CT (United States)
  2. Yale Univ., New Haven, CT (United States)
  3. Univ. of California, Berkeley, CA (United States)

New bright, photostable, emission-orthogonal fluorophores that blink without toxic additives are needed to enable multicolor, live-cell, single-molecule localization microscopy (SMLM). Here we report the design, synthesis, and biological evaluation of Yale676sb, a photostable, near-IR-emitting fluorophore that achieves these goals in the context of an exceptional quantum yield (0.59). When used alongside HMSiR, Yale676sb enables simultaneous, live-cell, two-color SMLM of two intracellular organelles (ER + mitochondria) with only a single laser and no chemical additives.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). Molecular Foundry
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Institutes of Health (NIH)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
2469690
Journal Information:
ACS Central Science, Journal Name: ACS Central Science Journal Issue: 8 Vol. 7; ISSN 2374-7943
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

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